Can you tell me ________?

A．what are they doing that for

B．why they are doing for

C．why are they doing that

D．what they are doing that for

患者，女性，40岁。10年前因乙型肝炎住市传染病医院。近2年来周身乏力，消瘦，常伴牙龈出血，月经量多。近10天腹胀加重，伴少尿。查体：面色黝黯无光泽，巩膜黄染，腹壁静脉曲张明显，移动性浊音阳性。

提问：本病人最可能的诊断为（）

A.慢性乙型病毒性肝炎

B.胃溃疡

C.肝硬化失代偿期

D.肝硬化代偿期

E.肠结核

F.溃疡性结肠炎