Which of the Following Series Converges?
1) $\sum _ { n = 1 } ^ { \infty } \left( \frac { n } { 2 + 3 n } \right) ^ { n }$

Multiple Choice

Which of the following series converges?
1) $\sum _ { n = 1 } ^ { \infty } \left( \frac { n } { 2 + 3 n } \right) ^ { n }$
2) $\sum _ { n = 2 } ^ { \infty } \frac { n + 1 } { \sqrt { n ^ { 4 } - 1 } }$
3) $\sum _ { n = 1 } ^ { \infty } \frac { 1 } { 1 + n ^ { 2 } }$

A) None
B) 1
C) 2
D) 3
E) 1, 2
F) 1, 3
G) 2, 3
H) 1, 2, 3