Find the General Term, An, of the Given Geometric Sequence $1 , \frac { 1 } { 6 } , \frac { 1 } { 36 } , \ldots$

Multiple Choice

Find the general term, an, of the given geometric sequence.
- $1 , \frac { 1 } { 6 } , \frac { 1 } { 36 } , \ldots$

A) $a _ { n } = \frac { 1 } { 6 ^ { n - 1 } }$
B) $a _ { n } = \frac { 1 } { 6 ^ { 1 - n } }$
C) $a _ { n } = \frac { 1 } { 6 ( n - 1 ) }$
D) $a _ { n } = 1 - \left( \frac { 5 } { 6 } \right) ^ { n }$