Public Expenditures for Temporary Assistance for Needy Families (TANF) Have

Public expenditures for Temporary Assistance for Needy Families (TANF) have not increased as much as Social Security since the mid-1990s because

A) many state governments choose not to participate.
B) eligibility qualifications were severely tightened.
C) TANF benefits are not automatically readjusted for inflation.
D) economic expansion brought more people above the poverty line.
E) the rate of inflation has been so low.