Find the Area of the Specified Region $r = - 6 \cos \theta$

Multiple Choice

Find the area of the specified region.
-Inside the circle $r = - 6 \cos \theta$ and outside the circle $r = 3$

A) $\frac { 3 } { 2 } ( 4 \pi - 3 \sqrt { 3 } )$
B) $3 \pi$
C) $\frac { 3 } { 2 } ( 2 \pi + 3 \sqrt { 3 } )$
D) $\frac { 9 } { 2 } \pi$