Determine Whether the Sequence Is Geometric $- 2,6 , - 18,54 , \ldots$

Determine whether the sequence is geometric. If so, find the common ratio. $- 2,6 , - 18,54 , \ldots$

A) $- 3$
B) $- 2$
C) $- \frac { 1 } { 3 }$
D) 3
E) not geometric