Choose the correct answers in $\int\frac{\large \cos 2x}{\large (\sin x+\cos x)^2}dx$ is equal to

Question

$\begin{array}{1 1} A\;\frac{-1}{\sin x+\cos x}+C \\ (B)\;log|\sin x+\cos x\;|+C \\ C\;log|\sin x-\cos x\;|+C \\D\;\frac{1}{(\sin x+\cos x)^2} \end{array} $