选词填空问题

—Why did you worry about me?I didn't take any risks.

—Well,you ______ injured.

A.must have been

B.could have been

C.should have been

D.would have been

请教一下老师，这道题为何选D?

        would have 表示对已经发生的状况的推断，意思是“可能已经；大概已经”。所以，依据语境，这道题的答案应该选D。