Let $y=log_e\left(\frac{a+bsinx}{a-bsinx}\right),$ then value of $\frac{dy}{dx}$ is :

$\frac{abcos x}{a^2-b^2sin^2x}$ $\frac{abcos x}{a^2+b^2sin^2x}$ $\frac{asin x}{a^2-b^2sin^2x}$ $\frac{2abcos x}{a^2-b^2sin^2x}$

$\frac{2abcos x}{a^2-b^2sin^2x}$