If the government collects 20,000 in taxes from someone with income of 100,00:

If the government collects 20,000 in taxes from someone with income of 100,00:

a) the average tax rate is unkown and the marginal tax rate must be 20%

b) the average and marginal tax rates are unknown

c) the average tax rate is 20% and the marginal tax rate is unknown

d) the average tax rate is 20% and the marginal tax rate must be 20%