一袋中有\(5\)个白球，\(3\)个红球，现从袋中往外取球，每次任取一个记下颜色后放回，直到红球出现\(10\)次时停止，设停止时共取了\(ξ\)次球，则\(P(ξ=12)\)等于\((\)　　\()\)

A．\(C_{12}^{10}( \dfrac {3}{8})^{10}⋅( \dfrac {5}{8})^{2}\)

B．\(C_{11}^{9}( \dfrac {3}{8})^{9}( \dfrac {5}{8})^{2}⋅ \dfrac {3}{8}\)

C．\(C_{11}^{9}( \dfrac {5}{8})^{9}⋅( \dfrac {3}{8})^{2}\)

D．\(C_{11}^{9}( \dfrac {3}{8})^{9}⋅( \dfrac {5}{8})^{2}\)

【考点】n次独立重复试验与二项分布

【分析】请登陆后查看

【解答】请登陆后查看

难度：中等