If $f: R\to R$ be given by $f(x)=(3-x^3)^\frac {1}{3} $, then $fof(x)$ is

Question

\[(A)\;\;x ^ \frac {1} {3}\qquad(B)\;\;x^3\qquad(C)\;\;x\qquad(D)\;\;(3-x^3)\]