题目：
一个多边形，它的每个内角都等于相邻外角的5倍，则这个多边形是[ ]
A. 正五边形
B. 正十边形
C.正十二边形
D. 不存在
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解析：Clients undergoing pelvic surgery are at increased risk for thrombophlebitis postoperatively. Extensive pelvic surgery, such as that involved in an ileal conduit, removes lymph nodes from the pelvis and results in circulatory congestion from edema and stasis.
