Chemotherapy Patients May Associate Stimuli Such as the Nurse's Voice

Chemotherapy patients may associate stimuli such as the nurse's voice or the treatment center with the nausea induced by the chemotherapy and thus become nauseated in response to those stimuli. Which of the following would be the most effective technique for counteracting this phenomenon?

A) Reminding the patient that it is the chemical treatment rather than the various other stimuli that is responsible for the nausea
B) Repeatedly presenting the conditioned stimuli without the administration of the chemotherapy or with the use of anti-nausea agents
C) Offering an operant reinforcement for not experiencing nausea
D) Only giving the chemotherapy sporadically in conjunction with the stimuli which have come to elicit nausea