Which of the following statements is the most important reason that medical care markets do not fit the competitive model very well? A. There are so many not-for-profit providers in the market. B. Consumers have a difficult time determining prices before the transaction is completed. C. There are too many low-income consumers who want to purchase medical care. D. Providers find it easy to transfer their resources to other uses. E. Consumers have a difficult time evaluating the quality of care