if h(x) = (fog) (x) and h(x)=4(x+1)^2, find f(x) and g(x)

A. f(x) = 4x^2
g(x) = (x+1)^2

B. f(x) = 4x^2
g(x) = x+1

C. f(x) = x+1
g(x) = 4x^2

D. f(x) = (x+1)^2
g(x) = 4x^2