Simplify: x2y4z2\sqrt{\frac{x^2 y^4}{z^2}}z2x2y4 for x,y,z>0x, y, z > 0x,y,z>0.
xy2z\frac{xy^2}{z}zxy2
x2y2z\frac{x^2 y^2}{z}zx2y2
xy2z2\frac{xy^2}{z^2}z2xy2
xyz\frac{xy}{z}zxy