Managers Need to Understand What Motivates the Salespeople They Manage,because

Managers need to understand what motivates the salespeople they manage,because motivational activities:

A) can motivate salespeople when done correctly,but demotivate them when done incorrectly
B) are expensive and should not be performed unless absolutely necessary
C) are the only way a company has to ensure that salespeople continue to perform their jobs correctly
D) take up a large part of a sales manager's day
E) may not be right for every company