With Many Industrial Products and Consumer Purchases, Ancillary Services Are

With many industrial products and consumer purchases, ancillary services are an important consideration in selecting the promotional mix. The role of ________ is important to establish the seller's reputation. However, ________ is essential for building buyer confidence and providing evidence of customer service.

A) sales promotion; personal selling
B) personal selling; direct marketing
C) advertising; personal selling
D) sales promotion; advertising
E) public relations; direct marketing