Refer to the Income Distribution Data in the Table

Refer to the income distribution data in the table. Which of the following statements is correct?

A) The distribution of income was the same in 2015 as in 1980.
B) In 2015, the top 20 percent of households earned just over half of the nation's total income.
C) In 1980, the poorest 60 percent of the population earned 16.9 percent of the nation's total income.
D) The income levels of the lower 60 percent of households have fallen from 1980 to 2015.