As the sleep cycle evolves through the night, people tend to: A. spend more time in REM sleep and less time in NREM sleep. B. spend more time in NREM sleep and less time in REM sleep. C. spend a more...

As the sleep cycle evolves through the night, people tend to:

A. spend more time in REM sleep and less time in NREM sleep.

B. spend more time in NREM sleep and less time in REM sleep.

C. spend a more or less equal amount of time in REM sleep and NREM sleep.

D. spend more time in stage 4 sleep and less time in REM sleep.