How Is the Poverty Line Calculated

How is the poverty line calculated?

A) The baseline created in 1964 is used and then adjusted for inflation.
B) Each year, the cost of a family of four's food is tripled, and that is the poverty line.
C) The Office of Management and Budget uses the calculations from the welfare departments to announce the poverty line annually.
D) The poverty line is the same dollar amount as that calculated in 1972.
E) Elites in control of the government create policies that benefit business.