What is g(f(x)) when f(x) = 3x + 1 and g(x) = 4x2 - 4?



A)
g(f(x)) = 12x2 - 11


B)
g(f(x)) = 13x2 + 10x


C)
g(f(x)) = 36x2 + 24x


D)
g(f(x)) = 144x2 + 96x + 12