(单选题, )
下面代码的输出结果是( )

(单选题, )
下面代码的输出结果是( )
List1 = [m+n for m in 'AB' for n in 'CD']
Print(list1)

A.ABCD

B.AABBCCDD

C.['AC', 'AD', 'BC', 'BD']

D.错误

正确答案是C