If People Have Been Deprived of REM Sleep as a Result

If people have been deprived of REM sleep as a result of general sleep loss, illness or too much alcohol or barbiturates, they tend to

A) gradually develop a lower need for sleep.
B) get ancreased amount of REM sleep after REM deprivation
C) show neither ancrease nor decrease REM sleep after REM deprivation.
D) get a decreased amount of REM sleep after REM deprivation.