Factor Completely $$- x ^ { 2 } + 6 x + 40$$

Multiple Choice

Factor completely. If unfactorable, indicate that the polynomial is prime.
- $$- x ^ { 2 } + 6 x + 40$$

A) $( x - 4 ) ( x + 10 )$
B) prime
C) $- ( x + 4 ) ( x - 10 )$
D) $- ( x - 4 ) ( x + 10 )$