Combine Like Terms $$9 x ^ { 2 } + 6 x - 4 + 2 x + 9 + 8 x ^ { 2 }$$

Multiple Choice

Combine like terms.
- $$9 x ^ { 2 } + 6 x - 4 + 2 x + 9 + 8 x ^ { 2 }$$

A) $x ^ { 2 } + 11 x + 15$
B) $17 x ^ { 2 } + 8 x + 5$
C) $17 x ^ { 4 } + 8 x ^ { 2 } + 5$
D) $30 x ^ { 3 }$