If You Could Compare EEG Recordings from a Teenager and Her

Multiple Choice

If you could compare EEG recordings from a teenager and her grandmother,what should you expect

A)  Both of these individuals will sleep for the same length of time, but the grandmother will spend substantially less time in REM sleep. 
B)  Both of these individuals will sleep for the same length of time, but the grandmother will spend substantially more time in REM sleep. 
C)  The grandmother will sleep less than the teenager, but both will spend about 20 percent of their sleep time in REM sleep. 
D)  The grandmother will sleep less than the teenager, and also experience proportionately less REM sleep.