Your Client Suffers from Claustrophobia and Can't Get on the Elevator

Multiple Choice

Your client suffers from claustrophobia and can't get on the elevator at her place of employment. The therapist helps her construct an approach hierarchy to work towards riding the elevator. The client is trained in relaxation before the approach hierarchy is used. This method is indicative of

A) modeling.
B) systematic desensitization.
C) aversive conditioning.
D) flooding.