11.单选题(2.5分)-|||-设(X,Y)是二维随机变量,则在X,Y相互独立的条件下,下列关系不成立的是() ()-|||-A (x,y)=(F)_(x)(x)cdot (F)_(y)(y)-|||-B _(1)=(P)_(1)(P)_(1)-|||-C (x,y)=(f)_(x)(x)cdot (f)_(y)(y)-|||-D X={x)_(1),Y=(y)_( }} =P X={x)_(1),P(Y=(y)_(0))