FedEx and UPS Are Converting Their Delivery Trucks with Standard

Multiple Choice

FedEx and UPS are converting their delivery trucks with standard diesel engines to more fuel-efficient and cleaner hybrid-electric vehicles, which can cut fuel costs by half and lower fuel emissions by 90 percent. These vehicles are marked as low-emission hydraulic hybrids right on the side of the trucks. This is an example of

A) demarketing.
B) triple-top line marketing.
C) preemptive compliance.
D) green marketing.
E) cause marketing.