Although usually there are in this situation four identifiable participants—the physician, the hospital, the patient, and the payer (generally an insurance carrier or government)—the physician makes the essential decisions for all of them. The hospital becomes an extension of the physician; the payer generally meets most of the bona fide (bona fide: adv.adj.真诚地(的), 真实地(的)) bills generated by the physician/hospital; and for the most part (for the most part: adv.在极大程度上) the patient plays a passive role. In routine or minor illnesses, or just plain worries, the patient’s options are, of course, much greater with respect touse and price. In illnesses that are of some significance, however, such choices tend to evaporate, and it is for these illnesses that the bulk of the health-care dollar is spent. We estimate that about 75-80 percent of health-care expenditures are determined by physicians, not patients. For this reason, economy measures directed at patients or the general public are relatively ineffective.

With which of the following statements would the author be likely to agree?

I. Most patients are reluctant to object to the course of treatment prescribed by a doctor or to question the cost of the services.

II. The more serious the illness of a patient, the less likely it is that the patient will object to the course of treatment prescribed or to question the cost of services.

III. The payer, whether insurance carrier or the government, is less likely to acquiesce to demands for payment when the illness of the patient is regarded as serious.

(A) I only

(B) II only

(C) I and II only

(D) II and III only（C）