Which One of the Following Is NOT True

Which one of the following is NOT true?

A) The distribution of wealth is not the same as the distribution of income.
B) While the distribution of income has become more equal over the past 15 years, the income of the average American has not increased.
C) An unequal distribution of income can serve as an incentive for people to work hard to earn an income that will provide them with what they want.
D) Even as the distribution of income has become less equal over the past 15 years, the poor have seen improvements in their average income.