If $\displaystyle cos (xy) = x $, then $\displaystyle \frac{dy}{dx}=$

- (A) $\displaystyle \frac{-csc (xy) - y}{x}$
- (B) $\displaystyle \frac{csc (xy) - 1}{x}$
- (C) $\displaystyle -csc (xy)$
- (D) $\displaystyle \frac{-csc (xy)}{x}$
- (A) $\displaystyle -csc (xy) - 1$