Just Prior to Awakening Chinua from a Hypnotic State, the Therapist

Just prior to awakening Chinua from a hypnotic state, the therapist told him that during the next few days he would feel nauseous whenever he reached for a cigarette. Chinua's therapist was attempting to make use of

A) social influence.
B) posthypnotic suggestion.
C) dissociation.
D) hypnotic induction.