The general formula for the sum of the first terms is . Your answer should be in terms of .

The sum of a series is defined as the limit of the sequence of partial sums, which means
.

Select all true statements (there may be more than one correct answer):
A. The series is a telescoping series (i.e., it is like a collapsible telescope). B. The series is a geometric series. C. The series converges. D. Most of the terms in each partial sum cancel out. E. The series is a p-series.