Ruby 2.0 prepend question

test.rb

module B
  def test
    puts 'before B'
    super
    puts 'after B'
  end
end

module C
  def test
    puts 'before C'
    super
    puts 'after C'
  end
end

class A
  prepend B
  prepend C

  def test
    puts 'A'
  end
end

class AA
  prepend B, C

  def test
    puts 'AA'
  end
end

puts "prepend B; prepend C   => #{A.ancestors}\n\n"
A.new.test

puts "\n\nprepend B, C    => #{A.ancestors}\n\n"
AA.new.test

__END__
prepend B; prepend C   => [C, B, A, Object, Kernel, BasicObject]

before C
before B
A
after B
after C


prepend B, C    => [C, B, A, Object, Kernel, BasicObject]

before B
before C
AA
after C
after B