题目内容：
[A] When there are more than twelve people.[B] When there are five people.
[C] When there are fifteen people.
[D] When there are more than fifteen people.
参考答案：
答案解析：
单选题：[A] When there are more than twelve people.[B] When there ar
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[B] When there are five people.
[C] When there are fifteen people.
[D] When there are more than fifteen people.