Simplify: 3x2y6xy3\frac{3x^2y}{6xy^3}6xy33x2y.
x2y2\frac{x}{2y^2}2y2x
x22y2\frac{x^2}{2y^2}2y2x2
12xy2\frac{1}{2xy^2}2xy21
x2y\frac{x}{2y}2yx