This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Mood Disorders, Subject name: Psychiatry
[{'content': 'Disruption or disorganization of biological rhythm is observed in: \nSelect and explain. \nA. Schizophrenia, B. Anxiety, C. Depression, D. Mania', 'role': 'user'}, {'content': 'Answer: C \nExplanation: There are characteristic disturbances of sleep (early morning insomnia and reduced latency of REM sleep) in depression.', 'role': 'assistant'}]