In the diagram below, if the circle is of radius 3 inches and $AP = PB = 4$, then the area of the shaded region is

Question

$\begin{array}{1 1} (a)\; \text{10 sq. inches} \\ (b)\; \text{15 sq. inches} \\ (c)\;\text{20 sq. inches } \\ (d)\; \text{22 sq. inches} \end{array}$