Which expressions are equivalent to x8y−3x2y−5\frac{x^8 y^{-3}}{x^2 y^{-5}}x2y−5x8y−3?
x6y2x^6 y^2x6y2
x6y2\frac{x^6}{y^2}y2x6
x10y−8x^{10} y^{-8}x10y−8
x6y−2x^6 y^{-2}x6y−2