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: Unknown
[{'content': 'Difference between Delirium and Dementia: \nSelect and explain. \nA. Fluctuating course, B. Hypoactive psychomotor activity, C. Difficulty in finding words, D. Poor Memory', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ref. Oxford textbook of Psychiatry. Page. 358', 'role': 'assistant'}]