As a Manager, Avery Works Hard to Ensure All of Her

As a manager, Avery works hard to ensure all of her employees are treated fairly. She still, however, gets feedback that implies that some employees don't believe she is fair. This problem most likely results from the fact that

A) Avery doesn't understand that employees are not concerned with equity, only with getting the biggest possible reward for the least possible effort.
B) fair treatment is a hygiene factor rather than a motivator.
C) attempts to treat employees fairly only work in an Asian or European culture. American employees tend to be individualists who believe that rewarding results is more important than perceptions of fairness.
D) equity judgments are based on perceptions, and the perceptions of employees are not always accurate.