Which of the following is NOT an example of an efficiency-equity trade-off faced by economic agents?

A) HIV prevention medicines should be allocated to those activities that prevent more infections per dollar and then to less and less effective combinations of programs and populations until funds are exhausted, even if it means that some populations would be left without any prevention services.

B) Concerned about the falling birth rate, the French government is trying to encourage working women to have more babies.

C) The growing demand for corn by ethanol producers has led to a surge in the price of tortillas, a staple in the Mexican diet. The Mexican government should allocate subsidies to corn to make sure that all Mexican people afford to buy sufficient corn.

D) Medicare and Medicaid provide crucial healthcare services to the elderly and certain vulnerable populations. As a result, all Americans have access to basic healthcare services regardless of their financial status.