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': 'True about delirium are all except - \nSelect and explain. \nA. Preserved attention, B. Disturbed sleep, C. Disorientation, D. Hallucination', 'role': 'user'}, {'content': 'Answer: A \nExplanation: There is impaired attention in delirium.', 'role': 'assistant'}]