从8名女生，4名男生中选出6名组成课外小组，若按性别比例分层抽样，则不同的抽取方法种数是（ ）
A．C83C43
B．C84C42
C．C126
D．A84A42
8名女生，4名男生中选出6名组成课外小组，
每个学生被抽到的概率是
=6 8+4
，1 2
按性别比例分层抽样
∴女生要抽取4人，男生要抽取2人，
∴不同的抽取方法是C84C42
故选B．
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