Find the Area of the Region Specified in Polar Coordinates $r = 6 \sin \theta$

Multiple Choice

Find the area of the region specified in polar coordinates.
-the region inside both $r = 6 \sin \theta$ and $r = 6 \cos \theta$

A) $\frac { 9 } { 2 } ( \pi - 1 )$
B) $9 ( \pi - 1 )$
C) $\frac { 9 } { 2 } ( \pi - 2 )$
D) $9 ( \pi - 2 )$