An Arithmetic Gradient Series

Multiple Choice

An arithmetic gradient series

A) starts at zero at the end of the first period and then increases by a constant amount each period.
B) starts at zero at the beginning of the first period and then increases by a constant amount each period.
C) starts at zero at the end of the second period and then increases by a constant amount each period.
D) starts at zero at the beginning of the second period and then increases by a constant amount each period.
E) starts at zero at the end of the first period and then increases by an increasing amount each period.