Which of the Following Statements Is True Concerning Average Per

Which of the following statements is true concerning average per capita income by level of education?

A) Generally speaking, as the level of one's education increases, so do one's earnings.
B) At all levels of educational attainment, men earn more than women.
C) Generally speaking, someone with a Master's degree will earn more than twice that of a someone with only a high school level of education.
D) Generally speaking, someone with a Master's degree will earn more than six times that of a high school dropout.
E) All are true