Which of the following differential equations has $y = x$ as one of its particular solution?

Question

\begin{array}{1 1}(A)\;\frac{d^2y}{dx^2}-x^2\frac{dy}{dx}+xy=x\qquad(B)\;\frac{d^2y}{dx^2}+x\frac{dy}{dx}+xy=x\\(C)\;\frac{d^2y}{dx^2}-x^2\frac{dy}{dx}+xy=0\qquad(D)\;\frac{d^2y}{dx^2}+x\frac{dy}{dx}+xy=0\end{array}