Factor Completely $49 x ^ { 2 } - 16$ A) $( 7 x - 4 ) ^ { 2 }$

Multiple Choice

Factor completely. If unfactorable, indicate that the polynomial is prime.
- $49 x ^ { 2 } - 16$

A) $( 7 x - 4 ) ^ { 2 }$
B) prime
C) $( 7 x + 4 ) ^ { 2 }$
D) $( 7 x + 4 ) ( 7 x - 4 )$