Completely Factor the Polynomial or State That the Polynomial Is $36 x ^ { 2 } - 1$

Completely factor the polynomial or state that the polynomial is prime.
- $36 x ^ { 2 } - 1$

A) $( 6 x + 1 ) ^ { 2 }$
B) $( 6 x - 1 ) ( 6 x + 1 )$
C) $( 6 x - 1 ) ^ { 2 }$
D) prime