Find a General Term A_n for the Geometric Sequence $$a _ { 1 } = - \frac { 1 } { 5 } , r = 7$$

Find a general term a_n for the geometric sequence.
- $$a _ { 1 } = - \frac { 1 } { 5 } , r = 7$$

A) $a _ { n } = \left( - \frac { 1 } { 5 } \right) ^ { n - 1 } + \frac { 6 } { 35 }$
B) $a _ { n } = - \frac { 1 } { 5 } + \frac { 1 } { 7 } ( n - 1 )$
C) $a _ { n } = - \frac { 1 } { 5 } \cdot 7 ^ { n - 1 }$
D) $a _ { n } = - \frac { 1 } { 5 } + \frac { 6 } { 35 } ( n - 1 )$

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