Which of the following is true about reward power?
a. effective managers use their reward power sparingly.
b. effective managers use rewards in a controlling manner, signaling to subordinates that the manager has the upper hand.
c. managers who exercise coercive power more often than reward power create a tension-free work environment.
d. being able to give or withhold rewards based on performance allows managers to have a highly motivated workforce.
e. the use of reward power seldom produces high performance and is questionable ethically.