While Sales Contests Can Motivate Employees at All Levels to Participate

While sales contests can motivate employees at all levels to participate, a disadvantage of this method of sales promotion is that:

A) they are too complicated.
B) they are not taken seriously by the employees.
C) people often discontinue their positive behavior after the contest is over.
D) many point-of-purchase display materials are needed to implement a contest.
E) people feel they are not being recognized enough.