易出现腹水的是：

A．40岁，单侧囊性包块，直径4cm
B．28岁，双侧囊实性包块，直径8cm，活动
C．50岁，子宫后陷凹有不平、实性结节，有腹水
D．35岁，痛经，后陷凹有结节
E．30岁，原发不孕，低热，腹水，盗汗，消瘦

I would appreicate ___ very much if you could tell me something about bird flu.

A．this

B．that

C．it

D．you