Which of the Three Series Below Converges?
1) $\sum _ { n = 0 } ^ { \infty } \left( - \frac { 3 } { 4 } \right) ^ { n }$

Multiple Choice

Which of the three series below converges?
1) $\sum _ { n = 0 } ^ { \infty } \left( - \frac { 3 } { 4 } \right) ^ { n }$ 2) $\sum _ { n = 0 } ^ { \infty } \left( \frac { e } { \pi } \right) ^ { n }$ 3) $\sum _ { n = 0 } ^ { \infty } ( - 1 ) ^ { n }$

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