According to Projections for 2013 by the Tax Policy Center

According to projections for 2013 by the Tax Policy Center, the 20 percent of U.S. taxpayers who make the highest incomes

A) use loopholes and tax exemptions to reduce their share of federal income taxes to less than 20 percent.
B) pay almost 68 percent of federal income taxes.
C) pay about 92 percent of federal income taxes but only about 20 percent of Social Security and Medicare payroll taxes.
D) pay more in excise and other taxes than they pay in Social Security and Medicare payroll taxes.