If this isn't multiple inheritance, then what is?

mixin_is_multi_inheritance.rb

module A
  def report
    puts "reporting from A"
  end
end

class B
  def report
    puts "reporting from B"
  end
end

class C < B
  def report
    puts "calling super from C"
    super
  end
end

C.new.report
C.send(:include, A).new.report