The radius of the circle passing through the foci of the ellipse $\large\frac{x^2}{16}+\frac{y^2}{9}$$=1$ and having its center at $(0,3)$ is

Question

$\begin{array}{1 1}(A)\;4\\(B)\;3 \\(C)\;\sqrt {\large\frac{1}{2}} \\(D)\;\large\frac{7}{2} \end{array}$