How Has the View of Sales Promotions Changed During the Past

How has the view of sales promotions changed during the past decades?

A) Sales promotions are now considered an essential part of an organization's branding strategies.
B) Sales promotion tactics are now developed before the branding strategy is determined.
C) Sales promotions are now believed to be an ineffective tool for creating brand image.
D) Creatives have become more sophisticated, and this sophistication has led to a decline in their dependence on sales promotion.
E) Sales promotion techniques are increasingly being considered as "obsolete."