This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Psychiatry
[{'content': 'True about delirium is all Except: \nSelect and explain. \nA. Preserved attention, B. Disturbed sleep, C. Disorientation, D. Hallucination', 'role': 'user'}, {'content': "Answer: A \nExplanation: Delirium Disturbance of consciousness with reduced ability to focus, sustain, or shift attention. perceptual disturbance, impaired cognition (memory deficit, disorientation) develops over a sho period of time (usually hours to days) and tends to fluctuate. Above disturbance develops as a consequence of medical condition, substance intoxication/ withdrawal Reference: P.324p.325 10.2 DeliriumKaplan & Sadock's Comprehensive Textbook of Psychiatry, 9th Ed", 'role': 'assistant'}]