Which of the Following Is a Reason Why Sales Promotion

Which of the following is a reason why sales promotion has increased over the past 30 years?

A) Resellers are more interested in long-term performance over short-term profitability.
B) Heightened concerns about value have made customers more responsive to promotional offers.
C) It is unanimously agreed that sales promotion is more effective than advertising.
D) Sales promotion is less expensive and often makes up the entire integrated marketing strategy.
E) Consumers and resellers have begun to place more importance on quality over value.