Find the Volume of the Indicated Region $z = 16 - x ^ { 2 } - y ^ { 2 }$

Multiple Choice

Find the volume of the indicated region.
-the region bounded by the paraboloid $z = 16 - x ^ { 2 } - y ^ { 2 }$ and the $x y$ -plane

A) $128 \pi$
B) $\frac { 128 } { 3 } \pi$
C) $64 \pi$
D) $\frac { 256 } { 3 } \pi$