The General Solution of the Exact Differential Equation $( x + y ) d x + x d y = 0$

Multiple Choice

The general solution of the exact differential equation $( x + y ) d x + x d y = 0$ is

A) $- x ^ { 2 } + 3 x y = C$
B) $2 x ^ { 2 } - x y = C$
C) $2 x ^ { 2 } + x y = C$
D) $x ^ { 2 } + 2 x y = C$
E) $x ^ { 2 } - 2 x y = C$