To Provide More Delivery Service to the Consumer Market,UPS Created

To provide more delivery service to the consumer market,UPS created UPS stores.According to the AIDA model,to create attention for this more convenient way and less expensive way to mail packages through UPS,its marketing department should have relied on which element of the promotion mix?

A) public relations
B) sales promotion
C) event sponsorship
D) personal selling
E) direct marketing