Best way to set class level data and access from instance?

gistfile1.rb

class MyClass < Base
  option 'value'
  
  def some_method
    puts option
  end
end

I'm currently doing:

class Base
  def self.option(value)
    define_method(:option) do
      value
    end
  end

  def option
    nil
  end
end

Which overwrites the instance method every time it's called to return the new value. This feels really hacky though. Any better ideas?

class Base
  cattr_accessor :option

  def option
    self.class.option || super
  end
end

Something like that, maybe?