Completely Factor the Polynomial or State That the Polynomial Is $x ^ { 2 } + 7 x - 8$

Multiple Choice

Completely factor the polynomial or state that the polynomial is prime.
- $x ^ { 2 } + 7 x - 8$

A) prime
B) $( x + 1 ) ( x + 1 )$
C) $( x + 1 ) ( x + 8 )$
D) $( x - 1 ) ( x + 8 )$