Simplify: \rt\acx2y4z2\rt{\ac{x^2 y^4}{z^2}}\rt\acx2y4z2 for x,y,z>0x, y, z > 0x,y,z>0.
\acxy2z\ac{xy^2}{z}\acxy2z
\acx2y2z\ac{x^2 y^2}{z}\acx2y2z
\acxy2z2\ac{xy^2}{z^2}\acxy2z2
\acxyz\ac{xy}{z}\acxyz