Which of the Following Is a Reason Why the Use

Which of the following is a reason why the use of sales promotion has increase dramatically? ​

A) Customers are more responsive to advertising.
B) Brand loyalty is increasing.
C) Retailers are demanding greater promotional efforts from manufacturers to boost profits.
D) Retailers are placing a stronger emphasis on long-term results versus short-term results.
E) Customers are less responsive to personal selling.