Find the Sum of the Convergent Series $\sum _ { n = 0 } ^ { \infty } 9 \left( - \frac { 7 } { 8 } \right) ^ { n }$

Multiple Choice

Find the sum of the convergent series. $\sum _ { n = 0 } ^ { \infty } 9 \left( - \frac { 7 } { 8 } \right) ^ { n }$

A) $\frac { 27 } { 5 }$
B) $\frac { 21 } { 5 }$
C) $\frac { 72 } { 13 }$
D) $\frac { 24 } { 5 }$
E) $\frac { 81 } { 13 }$