I wanted to know _____.      [      ]

A. what is the matter with him    

B. what the matter is with him            

C. what was the matter with him  

D. what the matter was with him

男性，50岁，“胃痛”史15年，近年来消瘦、乏力，持续性呕吐宿食，胃痛规律改变，伴腰背痛。

最可能出现的电解质酸碱失衡是

A．高氯高钾酸中毒

B．高氯高钾碱中毒

C．低氯低钾酸中毒

D．低氯低钾碱中毒

E．高氯低钾碱中毒