Which of the Following Statements Is True

Which of the following statements is true?

A) The upper class is usually defined as wealthy persons with considerable money, property, and investments.
B) The middle class usually earns between $25,000 and $30,000 per year.
C) The working class is defined as those who work more than 50 hours per week.
D) The underclass is a group living on the edge between the upper middle class and the upper class who want to be rich.
E) All are correct