# Let ƒ : R —-> R, g : R ® R and h : R —> R be differentiable functions

Let ƒ : R —-> R, g : R ® R and h : R —> R be differentiable functions such that ƒ(x) = x3 + 3x + 2, g(ƒ(x)) = x and h(g(g(x))) = x for all x Î Then-

(A)g'(2) = 1/15

(B) h'(1) = 666

(C) h(0) = 16

(D) h(g(3)) = 36