As a Manager, Charlene Works Hard to Ensure That Employees

As a manager, Charlene works hard to ensure that employees are treated fairly, yet she still gets feedback that indicates that some employees don't believe she is fair. This problem most likely results from the fact that:

A) Charlene 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 works 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.