下列因式分解中,正确的是：.A.-2x^3-3xy^3+xy=-xy(2x^2-2y^2+1).B.-x^2-y^2=-(x+y)(x-y)
C.16x^2+4y^2-16xy=4(2x-y)
D.x^2)y+2xy+4y=y(x+2)^2