George Is Extremely Afraid to Ride Elevators

George is extremely afraid to ride elevators.His therapist treats George's fear by gradually getting him accustomed to riding in elevators.The therapist begins by teaching George to relax.He then learns to relax while standing close to the elevator and then to relax while standing in an elevator with the doors open, and so on.The two techniques being used by George's therapist are best described as

A) desensitization and reciprocal inhibition.
B) desensitization and reflection.
C) adaptation and aversion therapy.
D) reciprocal inhibition and EMDR.