Two congruent circles overlap on a plane. The radius of both circles is 2. The region in which they overlap has an area of $\pi$. What is the total area of the two overlapping circles ?

Question

$\begin{array}{1 1} (a)\;4 \pi \\ (b)\; 8 \pi \\ (c)\; 7 \pi \\ (d)\; 6 \pi \end{array}$