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

Multiple Choice

Find the volume of the indicated region.
-the region that lies under the paraboloid $z = x ^ { 2 } + y ^ { 2 }$ and above the triangle enclosed by the lines $x = 8 , y = 0$ , and $y = 2 x$

A) $\frac { 1792 } { 3 }$
B) 8192
C) $\frac { 14,336 } { 3 }$
D) $\frac { 224 } { 3 }$