The Public Transportation System in the San Francisco Area Conducted

The public transportation system in the San Francisco area conducted a survey that revealed respondents could be assigned to one of four categories: (1) people who never utilized mass transit, (2) people who utilized mass transit in the past but not now, (3) people who utilized mass transit occasionally,and (4) people who utilized mass transit regularly.These groups have significantly different perceptions about transportation alternatives.This is an example of _____ segmentation.

A) demographic
B) benefit
C) aggregate
D) economic
E) usage-rate