$\begin{array}{1 1} (A)\;y-\large\frac{x^2}{4}=cx^{2} \\ (B)y=\large\frac{x^2}{4}+cx^{-2} \\ (C)\;4y=\large\frac{x^2}{4}+cx^{-2} \\ (D\;y+\large\frac{x^2}{4}=cx^{-2}\end{array}$