Find the Radius of Convergence Of $\sum _ { n = 0 } ^ { \infty } 3 x ^ { n }$

Multiple Choice

Find the radius of convergence of $\sum _ { n = 0 } ^ { \infty } 3 x ^ { n }$ .

A) 2
B) $\frac { 1 } { 2 }$
C) 6
D) $\frac { 1 } { 6 }$
H) 0

E) 3
F) 1
G) $\frac { 1 } { 3 }$