The health care expenditure as a percentage of GDP is increasing in an emerging economy during a period of accelerated economic growth. Which of the following, if true, would signal that this is not a sign of trouble? A. The health care expenditure is being fueled by the principal-agent problem. B. The country is making huge investments in building up basic health infrastructure. C. Officials in the health ministry of this country have been accused of corruption in procurement decisions. D. People in this country visit hospitals for even minor illnesses, because health care is free. E. An increasing number of medical procedures are originating because of third-party payer health insurance