Choose the correct simplification of (2xy7)2(y4)3.

2^2  = 4   
answer starts with 4
(xy7)^2 = x^2 y(7*2) = x^2y^14
(y^4)^3  = y^(4*3) = y^12

answer is 4x^2 y^14*y^12
                                 =         4x^2 y^(12+14)
                                = 4x^2y^26

D