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

Multiple Choice

Factor the trinomial, if possible.
- $$16 x ^ { 2 } - 56 x - 32$$

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