已知随机变量 ${\xi }_i$ 满足 $P\left({\xi }_i=1\right)=p_i,P\left({\xi }_i=0\right)=1-p_i,i=1,2.$ 若 $0<p_1<p_2<\frac{1}{2}$ , 则（ ）

A．	$E\left({\xi }_1\right)<E\left({\xi }_2\right)\mathrm{，}D\left({\xi }_1\right)<D\left({\xi }_2\right)$
B．	$E\left({\xi }_1\right)<E\left({\xi }_2\right)\mathrm{，}D\left({\xi }_1\right)>D\left({\xi }_2\right)$
C．	$E\left({\xi }_1\right)>E\left({\xi }_2\right)\mathrm{，}D\left({\xi }_1\right)<D\left({\xi }_2\right)$
D．	$E\left({\xi }_1\right)>E\left({\xi }_2\right)\mathrm{，}D\left({\xi }_1\right)>D\left({\xi }_2\right)$