Show Picklist in Lightning component

getSelectOptions

public static List <String> getselectOptions(sObject objObject, string fld) {
        system.debug('objObject --->' + objObject);
        system.debug('fld --->' + fld);
        List < String > allOpts = new list < String > ();
        // Get the object type of the SObject.
        Schema.sObjectType objType = objObject.getSObjectType();
        // Describe the SObject using its object type.
        Schema.DescribeSObjectResult objDescribe = objType.getDescribe();
        // Get a map of fields for the SObject
        map < String, Schema.SObjectField > fieldMap = objDescribe.fields.getMap();
        // Get the list of picklist values for this field.
        list < Schema.PicklistEntry > values =
            fieldMap.get(fld).getDescribe().getPickListValues();
        // Add these values to the selectoption list.
        for (Schema.PicklistEntry a: values) {
            allOpts.add(a.getValue());
        }
        system.debug('allOpts ---->' + allOpts);
        return allOpts;
    }

uiComponent.cmp

<div class="slds-modal__content slds-p-around_medium" id="modal-content-id-1">
                            <p>
                                
                                <div class="slds-form-element">
                                    <!--<label class="slds-form-element__label" for="select-01">Reason For Transfer</label>
                                          <div class="slds-form-element__control">
                                              <div class="slds-select_container">
                                                  <select  class="slds-select" id="select-01">
                                                      <option value=""></option>
                                                      <option>Office Realignment</option>
                                                      <option>Restructuring Open Accounts</option>
                                                      <option>Other – Please provide details in Comments</option>
                                                  </select>
                                              </div>
                                    </div>-->
                                    <lightning:select name="select" aura:id="reasons" value="{!v.fReason}" label="Reason For Transfer" onchange = "{!c.interestRateButtonGroup}" >
                                        <aura:iteration items="{!v.reasons}" var="reason">
                                            <option value="{!reason}" text="{!reason}"></option>
                                        </aura:iteration>
                                    </lightning:select> 
                                </div>
                                
                            </p>
                        </div>

uiComponentController

getReasons : function(component, event, helper){ // call this on load or when evey picklist needs to be filled 
        // Create the action
        var action = component.get("c.getselectOptions");

        action.setParams({
            fld : 'Reason_For_Transfer__c'
        });

        action.setCallback(this, function(response) {
            var state = response.getState();
            if (state === "SUCCESS") {
                component.set("v.reasons", response.getReturnValue());
                /*var typesArray = [];
                for(var type in response.getReturnValue()){
                    typesArray.push(type)
                }
                var opts = [];
                for (var i = 0; i < typesArray.length; i++) {
                    opts.push({
                        class: "optionClass",
                        label: typesArray[i],
                        value: typesArray[i]
                    });
                }
                
                component.set("v.reasons", opts);*/
            }
            else {
                
            }
        });
        // Send action off to be executed
        $A.enqueueAction(action);
    },