What is the area in square inches of a circle with diameter $5 \pi^2$ inches ?

Question

$\begin{array}{1 1} (a)\; \dfrac{25}{4} \pi^4 \\ (b)\; \dfrac{25}{4} \pi^5 \\ (c)\; \dfrac{25}{2} \pi^4 \\ (d)\; \dfrac{25}{2} \pi^5 \end{array}$