Which Statement About the SAT Is True

Which statement about the SAT is true?

A) There is a smooth and dramatic increase in average (mean) SAT score as family income increases.
B) SAT preparation courses are mostly scams and generally do nothing to improve SAT scores.
C) Statistics about SAT scores indicate that White and Black students typically have similar scores in critical reading, mathematics, and writing.
D) The SAT and other college entrance exams have little effect on the stratification of access to higher education.