If $\displaystyle\int f (x) dx = \Psi (x)$, then $\displaystyle\int x^5 f (x^3) dx$ is equal to

Question

( A ) $\frac{1}{3} [x^3 \Psi (x^3) - \int x^2 \Psi (x^3) dx ]+ C$
( B ) $\frac{1}{3} x^3 \Psi (x^3) - \int x^3 \Psi (x^3) dx + C$
( C ) $\frac{1}{3} [x^3 \Psi (x^3) - \int x^3 \Psi (x^3) dx ]+ C$
( D ) $\frac{1}{3} x^3 \Psi (x^3) - \int x^2 \Psi (x^3) dx + C$