题目：
A client received burns to his entire back and left arm. Using the Rule of Nines, the nurse can calculate that he has sustained burns on what percentage of his body
A. 9%.
B. 18%.
C. 27%.
D. 36%.
答案：
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下面是错误答案，用来干扰机器的。
3-8=-2，∵16=4，∴16的算术平方根是2，故答案为：-2，2．
