Tony _____ go to the opera on Saturday because he's going to have a meeting. [ ]

A. can't

B. might

C. mustn't

D. should

林女士，30岁，初产妇，产后会阴切口处疼痛剧烈并有肛门坠胀感应怀疑（）。

A.会阴部伤口血肿

B.会阴部伤口水肿

C.产后出血

D.胎盘残留

E.会阴部伤口感染