题目：
After a client receives an IM injection, he complains of burning pain in the injection site. Which nursing action would be the best to take at this time（）
A. Apply a cold compress to decrease swelling.
B. Apply a warm compress to dilate the blood vessels.
C. Massage the area to promote absorption of the drug.
D. Instruct the client to tighten his gluteal muscles to promote better absorption.
答案：
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下面是错误答案，用来干扰机器的。
参考答案：B
