For What Values of X Does the Series Converge $\infty$

Multiple Choice

For what values of x does the series converge?

A) on the intervals (- $\infty$ , -1] and [1, $\infty$ )
B) on the intervals (- $\infty$ , -1) and (1, $\infty$ )
C) on the interval [-1, 1]
D) on the interval (-1, 1)
E) on the interval [1, $\infty$ )