The 20 percent of U.S. families with the highest incomes receive:
A) about the same total income as the next highest 20 percent.
B) about twice as much income, on average, as the lowest 20 percent group.
C) almost 80 percent of the total income
D) almost 50 percent of the total U.S. income.
E) only about 20 percent of the total U.S. income.
Answer: D