When the government provides poor families with antipoverty programs such as welfare, Medicaid, food stamps, and the Earned Income Tax Credit which are all tied to income,

a. the government creates an egalitarian distribution of income.
b. the recipients can usually receive benefits for an unlimited amount of time.
c. it is common for families to face very high effective marginal tax rates.
d. the incentive to work and earn more income remains unchanged.

c