i'm in class 5(对5提问)答案应该是what class are you in?还是which class are you in?

问题描述:

i'm in class 5(对5提问)答案应该是what class are you in?还是which class are you in?
i'm in class 5(对5提问)
答案应该是what class are you in?
还是which class are you in?

这两个句子都可以.那具体有什么区别吗?没区别