Simplify the Polynomial by Combining Like Terms $$- 5 x ^ { 2 } + 4 x + 3 x + 5 x$$

Multiple Choice

Simplify the polynomial by combining like terms.
- $$- 5 x ^ { 2 } + 4 x + 3 x + 5 x$$

A) $- 300 x ^ { 5 }$
B) $- 5 x ^ { 2 } + 7 x$
C) $- 5 x ^ { 2 } + 7 x + 5$
D) $- 5 x ^ { 2 } + 12 x$