What Happens to People Who Are Selectively Deprived of Slow-Wave

Multiple Choice

What happens to people who are selectively deprived of slow-wave sleep for several nights in a row

A)  They make up for the lost slow-wave sleep when allowed to sleep without interruption. 
B)  They suffer no ill effects whatsoever. 
C)  They need to be awakened less and less frequently as the deprivation goes on. 
D)  They spend more time in REM sleep to compensate.