$\begin{array}{1 1} (A)\;x+ye^{\Large\frac{x}{y}}=0 \\ (B)\;x-e^{\Large\frac{x}{y}}=0 \\ (C)\;x+e^{\Large\frac{2x}{y}}=0\\ (D)\;x+e^{\Large\frac{x}{2y}}=0 \end{array} $