Olivia Has Trouble Sleeping for More Than Four Hours Each

Multiple Choice

Olivia has trouble sleeping for more than four hours each night.What is Olivia likely to experience

A)  more sleep spindles than people who sleep for a full eight hours 
B)  less deep sleep than people who sleep for a full eight hours 
C)  more vivid dreams than people who sleep for a full eight hours 
D)  less REM sleep than people who sleep for a full eight hours