Could you tell me ____________________ ?

A．what she had done with the newspaper

B．how we can call this lady

C．what’s wrong with the little boy

D．which gate I should go

患者女，42岁，因“进行性高血压1年”来诊。肾CT：右肾上腺占位。尿3-甲氧基-4-羟苦杏仁醛（VMT）升高。诊断为嗜铬细胞瘤，拟行肾上腺肿瘤切除术。

除上述术前准备外，最重要的准备是（）

A.纠正酸中毒

B.降低血糖

C.扩充血容量

D.利尿

E.增加营养

F.纠正电解质紊乱