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
[{'content': 'All of the following are feature of depression except- \nSelect and explain. \nA. Nihilistic delusions, B. Diurnal variation in mood, C. Suicidal tendency, D. Elation', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Elation is seen in mania (not in depression).', 'role': 'assistant'}]