单项选择题

A.Sqr(x+y)-Sin(Abs(y^2*x)/(x-y))
B.Sqr(x+y)-Sin(Abs(y^2*x)/x-y)
C.Sqr(x+y)-Sin(|y^2*x|/(x-y))
D.Sqr(x+y)-Sin(|y^2*x|/x-y)