Factor the Trinomial, If Possible $14 x ^ { 2 } - 49 x - 28$

Multiple Choice

Factor the trinomial, if possible.
- $14 x ^ { 2 } - 49 x - 28$

A) $7 ( 2 x - 1 ) ( x + 4 )$
B) $7 ( 2 x + 1 ) ( x - 4 )$
C) $( 2 x - 1 ) ( 7 x + 28 )$
D) $( 14 x - 7 ) ( x + 4 )$