Perform the Indicated Operations $$\left( 7 x ^ { 2 } + 13 x + 15 \right) + \left( - 5 x ^ { 2 } + 6 x - 9 \right)$$

Multiple Choice

Perform the indicated operations.
- $$\left( 7 x ^ { 2 } + 13 x + 15 \right) + \left( - 5 x ^ { 2 } + 6 x - 9 \right)$$

A) $x ^ { 2 } + 19 x + 6$
B) $x ^ { 2 } - 19 x + 6$
C) $x ^ { 2 } + 18 x + 24$
D) $x ^ { 2 } + 19 x + 24$