This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Psychiatry
Early morning awakening and reduced latency of REM sleep is suggestive of - 
Select and explain. 
A. Delirium, B. Depression, C. Schizophrenia, D. Anxiety
B: Depression
Answer: B: Depression 
Explanation: Early morning awakening and reduced latency of REM sleep is suggestive of depression.