Which of the Following Statements Concerning Income Distribution Among Nations

Which of the following statements concerning income distribution among nations is true?

A) A country with unequal distribution of income has a high standard of living.
B) The richest countries have only 10 percent of the world's population but receive 80 percent of total world income.
C) The distribution of total world income among nations is equal.
D) One-quarter of the world's population lives in the developing countries.
E) Per capita income between countries is generally the same.