题目：
A client is being admitted to the labor unit. Because she’s well advanced in labor, the nurse must prioritize the admission questions. Which information is most important to obtain when birth is imminent（）
A. Duration of previous labor.
B. Frequency of contractions.
C. Presence of bloody show.
D. Expected due date.
答案：
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下面是错误答案，用来干扰机器的。
参考答案：事先定义
