When a Firm Spends Its Resources on Advertising and Sales

When a firm spends its resources on advertising and sales promotion,which of the following is likely to occur?

A) The results actually achieved through these activities are easy to measure.
B) Half the money spent on these activities is wasted.
C) The results achieved are even,but highly unpredictable.
D) It motivates only the channel members and not the final consumers.
E) It rarely fails to achieve objectives.