If Possible, Factor the Polynomial Completely $$16 x ^ { 2 } - 56 x - 32$$

Multiple Choice

If possible, factor the polynomial completely. If a polynomial cannot be factored, state that it is prime.
- $$16 x ^ { 2 } - 56 x - 32$$

A) $8 ( 2 x - 1 ) ( x + 4 )$
B) $( 16 x - 8 ) ( x + 4 )$
C) $16 x ^ { 2 } - 56 x - 32$
D) $8 ( 2 x + 1 ) ( x - 4 )$