Find a General Term A_n for the Geometric Sequence $$a _ { 1 } = \frac { 1 } { 4 } , r = 8$$

Multiple Choice

Find a general term a_n for the geometric sequence.
- $$a _ { 1 } = \frac { 1 } { 4 } , r = 8$$

A) $a _ { n } = \frac { 1 } { 4 } \cdot 8 ^ { n - 1 }$
B) $a _ { n } = \frac { 1 } { 4 } + \frac { 7 } { 4 } ( n - 1 )$
C) $a _ { n } = \left( \frac { 1 } { 4 } \right) n - 1 + \frac { 7 } { 4 }$
D) $a _ { n } = \frac { 1 } { 4 } + 8 ( n - 1 )$