Which of the following expressions are equivalent to x8y124\sqrt[4]{x^8 y^{12}}4x8y12 (assume x,y>0x,y > 0x,y>0)?
x2y3x^2 y^3x2y3
(x8y12)1/4(x^8 y^{12})^{1/4}(x8y12)1/4
x4y8x^4 y^8x4y8
x4y6\sqrt{x^4 y^6}x4y6