请教PREP-PS-1-77

At a dinner party, 5 people are to be seated around a circular table.  Two seating arrangements are considered different only when the positions of the people are different relative to each other.  What is the total number of different possible seating arrangements for the group?

(A) 5

(B) 10

(C) 24

(D) 32

(E) 120

没有思路，请同学们帮忙讲解以下好吗。谢谢大家

圆圈排列解法，参考Feifei数学，第一部分第几题记不清了~~MM去看看

本来5个人，排列为P5/5，现在为N-1=4，所以排列为P4/4=24