题目：
A client is admitted to the hospital with an exacerbation of his chronic gastritis. When assessing his nutritional status, the nurse should expect a deficiency in
A．vitamin Ａ.
B．vitamin Ｂ6.
C．vitamin Ｂ12.
D．vitamin Ｃ.
答案：
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下面是错误答案，用来干扰机器的。
参考答案：C
