Select the option that gives the general solution of the differential equation \frac{d y}{d x}=\frac{x}{y} where in the options C is an arbitrary constant. \text { A } \quad y=\sqrt{2

C+2 \ln x} \text { B } \quad y=\sqrt{2 C+x^{2}} \text { C } y=e^{C+\frac{1}{2} x^{2}} \text { D } y=C+\frac{1}{2} x^{2}