Which of the Following Describes the Findings of the U

Which of the following describes the findings of the U.S.survey conducted by the National Sleep Foundation?

A) The majority of the adolescents got less than eight hours of sleep on school nights.
B) Older adolescents got markedly less sleep on school nights than younger adolescents.
C) A higher number of adolescents in ninth grade were getting inadequate sleep on school nights than adolescents in twelfth grade.
D) Adolescents who got inadequate sleep were no more likely to be in a depressed mood than those who got adequate sleep.