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

Multiple Choice

Your client suffers with claustrophobia and can't get on the elevator at her place of employment. You help her construct an approach hierarchy to work toward riding the elevator. Your 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.