Which of the Following Statements About Social Class Is NOT

Which of the following statements about social class is NOT true?

A) The various classes tend to have different attitudes and beliefs.
B) The various classes tend to spend, save, and borrow money differently.
C) People with the same income level may be in different social classes.
D) In the U.S., the social class system is less rigid than in most other countries.
E) In the U.S., the system for measuring social class is based mainly on a person's income.