Find the Area of the Region Specified in Polar Coordinates $r = 10 \cos 3 \theta$

Multiple Choice

Find the area of the region specified in polar coordinates.
-the region enclosed by the curve $r = 10 \cos 3 \theta$

A) $50 \pi$
B) $\frac { 50 } { 3 } \pi$
C) $\frac { 25 } { 3 } \pi$
D) $25 \pi$