Which of the Following Statements About Sleep Is Correct

Multiple Choice

Which of the following statements about sleep is correct?

A) Sleep typically occurs in stages in which a subject goes through progressively deeper stages of sleep and then awakens.
B) Sleep typically occurs in cycles in which a subject will cycle through various stages of slow-wave sleep punctuated by paradoxical sleep several times during one bout of sleep.
C) During REM sleep, blood pressure and breathing rate become elevated.
D) Both "sleep typically occurs in stages in which a subject goes through progressively deeper stages of sleep and then awakens" and "during REM sleep, blood pressure and breathing rate become elevated" are correct.
E) Both "sleep typically occurs in cycles in which a subject will cycle through various stages of slow-wave sleep punctuated by paradoxical sleep several times during one bout of sleep" and "during REM sleep, blood pressure and breathing rate become elevated" are correct.