问题详情

Bob：Rat happened？Jenny：Well，I was walking to school，and I suddenly felt very sick． Bob：Yes…Jenny：So，I went back to my apartment and stayed in bed all day． Bob：Oh，__________．

A.it，s terrible

B.it，s bad

C.I"m sorry to hear that

D.it’S sad

请帮忙给出正确答案和分析，谢谢！