Disadvantages of the Behavioral Modification Approach to Motivation Consist of Which

Disadvantages of the behavioral modification approach to motivation consist of which of the following?

A) Behavioral modification can be manipulative and dehumanizing.
B) The approach is flawed because the reinforcement must be carefully tailored to the personality of each employee.
C) Effectiveness is reduced when employees become aware that they are being manipulated in this fashion.
D) All of the above.
E) None of the above.