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 a features of mania except - \nSelect and explain. \nA. Decreased need for sleep, B. Elated mood, C. Delusion of grandeur, D. Decreased motor activity', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Psychomotor activity is increased in mania.', 'role': 'assistant'}]