Perform the Indicated Operation $\left( 18 x ^ { 2 } + 11 \right) - \left( 6 x ^ { 2 } - 6 \right)$

Multiple Choice

Perform the indicated operation.
- $\left( 18 x ^ { 2 } + 11 \right) - \left( 6 x ^ { 2 } - 6 \right)$

A) $24 x ^ { 2 } + 5$
B) $12 x ^ { 2 } + 17$
C) $24 x ^ { 2 } + 17$
D) $12 x ^ { 2 } + 5$