Use a Spherical Coordinate Integral to Find the Volume of the Given

Multiple Choice

Use a spherical coordinate integral to find the volume of the given solid.
-the solid bounded below by the sphere $\varrho = 6 \cos \varphi$ and above by the cone $z = \sqrt { x ^ { 2 } + y ^ { 2 } }$

A) $12 \pi$
B) $\frac { 54 } { 5 } \pi$
C) $\frac { 216 } { 25 } \pi$
D) $9 \pi$