If that is not yours,( )?

问题描述:

If that is not yours,( )?
A、who can it be B、whose can it be
C、who it can be D、it can be whose

应该是选 B、whose can it be 吧
句意就是 如果这个不是属于你的,那它是谁的呢?
把那问句还原就是:it can be sb's 这是某人的
那问句就是 把疑问词whose提前 whose can it be