单选题：Once the initial cold pack is removed, what is to be done?

题目分类：卫生类
题目类型：单选题
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题目内容：

Once the initial cold pack is removed, what is to be done? A．Begin bandaging the ankle
B．Wait 30 minutes and then reapply the pack for 20 minutes
C．Keep the ankle in a position lower than your heart
D．Wait 20 minutes and then reapply the ice pack for 30 minutes

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