Divide Leave Your Answer in Exponent Form $( - 2 a ) ^ { 6 }$

Divide. Leave your answer in exponent form. Assume that all variables in any denominator are nonzero.
- $( - 2 a ) ^ { 6 }$

A) $- 12 a$
B) $a 6$
C) $- 12 a ^ { 6 }$
D) $a$