—I don't know why Denise started crying when I mentioned the wedding.

—It ______ what you said about her brother. Or, perhaps she is just nervous. [ ]

A. should have been  

B. couldn't have been

C. could have been

D. must have been

女性，48岁，近两年月经周期紊乱，血量多，此次又 * * 流血20余天，伴头晕、心悸。查体：轻度贫血外观，子宫、附件正常。　　该病人下一步的处理方案是（　　）

A．诊刮

B．止血芳酸

C．大量雌激素

D．大剂量雄激素

E．大剂量孕激素