$\begin{align*} \frac{\sin^3 x + \cos^3 x}{\sin^2x \cos^2 x } dx \end{align*}$ is equal to :

Question

( A ) $\sec x - \mathrm{cosec}x + c$
( B ) $\tan x + \cot x + c$
( C ) $\sin x - \cos x + c$
( D ) $\sin x + \cos x + c$