Which of the Following Is the Most Significant Reason for the Increased

Which of the following is the most significant reason for the increased demand for medical care?

A) Medicare and Medicaid programs have increased individuals' ability to pay for medical services.
B) The average age of the population has decreased.
C) The elderly population's share of medical expenditures has decreased.
D) Medical technology has not improved significantly over the past decades.
E) The number of nursing homes constructed annually has risen.