I haven't decided__ university I shall apply for.A what B which C where D for which

I haven't decided__ university I shall apply for.A what B which C where D for which
I haven't decided__ university I shall apply for.A what B which C where D for which

I haven't decided__ university I shall apply for.A what B which C where D for which
B.
意思：我还没有决定我将申请哪一所大学.“哪一”,表示有范围的选择,所以用which.