Solve the following $(x+y)^2 \large\frac{dy}{dx}$=$1$

Question

$\begin{array}{1 1}(A) \;y + \tan (x+y) = c \\ (B)\; y + \tan^{-1} (x+y) = c\\(C) \;y - \tan (x+y) = c\\(D) \;y - \tan^{-1} (x+y) = c\end{array}$