$\sin^{-1} \begin{pmatrix}\frac{x}{\sqrt{1-x^2}} \end{pmatrix}$ is equal to :

Question

( A ) $\tan^{-1}x$
( B ) $-\tan^{-1}x$
( C ) $\cot^{-1}x$
( D ) $\sin^{-1}x$