Completely Factor the Polynomial or State That the Polynomial Is $3 x ^ { 2 } - 108$

Multiple Choice

Completely factor the polynomial or state that the polynomial is prime.
- $3 x ^ { 2 } - 108$

A) $3 ( x + 6 ) ( x - 6 )$
B) $3 ( x - 6 ) ^ { 2 }$
C) prime
D) $3 ( x + 6 ) ^ { 2 }$