Which of the Following Is True About Brain Structures Involved

Multiple Choice

Which of the following is true about brain structures involved in sleep and waking?

A) The SCN is the most important sleep center.
B) The central sleep and arousal system is located in the medulla.
C) The SCN controls the timing of sleep and waking,but other structures are important in producing these states.
D) The basal forebrain area is the most important area for REM sleep.