Find the Sum of the Infinite Series $$\sum _ { i = 1 } ^ { \infty } 3 \left( \frac { 1 } { 3 } \right) ^ { i }$$

Multiple Choice

Find the sum of the infinite series.
$$\sum _ { i = 1 } ^ { \infty } 3 \left( \frac { 1 } { 3 } \right) ^ { i }$$

A) undefined
B) $\frac { 3 } { 4 }$
C) 3
D) $\frac { 9 } { 4 }$
E) $\frac { 3 } { 2 }$