Find the equation for the ellipse that satisfies the given conditions : Ends of major axis $ (0, \pm \sqrt 5 )$, ends of minor axis $(\pm 1, 0)$

Question

$\begin {array} {1 1} (A)\;\large\frac{x^2}{5}+\large\frac{y^2}{1}=1 & \quad (B)\; \large\frac{x^2}{1}+\large\frac{y^2}{5}=1 \\ (C)\;\large\frac{x^2}{1}-\large\frac{y^2}{5}=1 & \quad (D)\;\large\frac{x^2}{5}-\large\frac{y^2}{1}=1 \end {array}$