Find the Sum of the Geometric Series, If Possible $$\sum _ { n = 1 } ^ { \infty } \left( - \frac { 1 } { 2 } \right) ^ { n }$$

Multiple Choice

Find the sum of the geometric series, if possible.
- $$\sum _ { n = 1 } ^ { \infty } \left( - \frac { 1 } { 2 } \right) ^ { n }$$

A) $\frac { 2 } { 3 }$
B) $- 1$
C) 2
D) $- \frac { 1 } { 3 }$