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': 'Delirium is differentiated from dementia by: \nSelect and explain. \nA. Ataxia, B. Apraxia, C. Alexia, D. Altered sensorium', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Altered sensorium', 'role': 'assistant'}]