Which of the following would be a good example of a government program that provides an "indexed" social benefit?

A) a federally-run program that provides small business owners who hire a military veteran with a cash payment of $2,500 for every six months of the program's operation
B) a local government program that provides low-income families with a benefits card that can be used to purchase $5,000 of groceries during every year of the program's operation
C) a federally-run program that provides $750 to low-income families in the first year of implementation and that increases payments by 1.5 percent in each subsequent year of the program's operation
D) a state government program that provides $750 every year to low-income families for every month of the program's operation