If a doctor gives 100 patients who complain ofpain a simple sugar pill, he can be surethat 33 of them will feel better. Painexperts have known for a long time that people who respond to placebos also getmore relief from narcotics than do those who dont show the placeboeffect. Now research is being done todetermine whether the placebo response is all in the head or whether the inertpills have physical effects after all.According to this paragraph:
A. All pain victims show the same response to placebos. B. Patients get more relief from placebos than narcotics. C. Placebos may have more than just psychological effects. D. It is well known how placebos work.