
Passage: The report of the Ministry of Health shows that the cost of health care has indeed increased over the years. It can be seen that the medical conditions enjoyed by each of us have been greatly improved.
Question: Which of the followings raises the most serious challenge to the above conclusion?
A. A.The vast majority of health care expenses are spent on high-tech intensive care for high-risk patients
B. B.Without increasing the cost, our sanitary conditions may also be improved
C. C.70% of the state allocation to the health sector is spent on infrastructure construction
D. D.The cost of nursing care for chronic diseases in the elderly is very huge
Answer: