The twin looks _____ each other.It’s difficult to tell ____.

The twin looks _____ each other.It’s difficult to tell ____.
A.similar to,which is which B.same as,who is who
C.similar to,who is who D.the same to,which is which
答案是A为什么啊

A
再问： 我已经说 了答案 A了，我要知道为什么
再答： 哦，没看到。 look similar to 是看起来相似，用which是因为是在这两人当中判别，∴用which