If \( w, y, z \) are Boolean variables, then which of the following is incorrect?
(A) \( w x+w(x+y)+x(x+y)=x+w y \)
(B) \( (w \bar{x}(y+\bar{z}))'+\bar{w} x=\bar{w}+x+\bar{y} z \)
(C) \( (w \bar{x}(y+x \bar{z})+\bar{w} \bar{x}) y=x \bar{y} \)
(D) \( (w+y)(w x y+w y z)=w x y+w y z \)