14. A progressive tax system is one where

a. marginal tax rates are low.

b. marginal tax rates are high.

c. higher income taxpayers pay more taxes than do lower income taxpayers.

d. higher income taxpayers pay a greater percentage of their income in taxes than do lower income taxpayers. Use the following information about a tax system to answer questions 15 through 17. Income Amount of Tax $10,000 $1,000 20,000 2,000 30,000 5,000 40,000 15,000