Find the Partial Derivative $z=g(x, y)=4 x+2 x^{2} y^{2}-4 y^{2}$ Find

Multiple Choice

Find the partial derivative.
-Let $z=g(x, y) =4 x+2 x^{2} y^{2}-4 y^{2}$ . Find $\frac{\partial z}{\partial x}$ .

A) $4+4 x^{2} y$
B) $4+4 x y^{2}$
C) $4 x y^{2}-8 y$
D) $4 x^{2} y-8 y$