单选题

下面程序的输出结果是什么 alist = [[1,2],3,4] blist = alist blist[0]=1 print(alist)

Question

A.[1,[1,2],3,4]

B.[1, 3,4]

C.[[1,2],1, 3,4]

D.[[1,1,2], 3,4]