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: Dental
[{'content': 'A 3-yr-old child living in area with 0.8 ppm F in water should be given F tablets daily: \nSelect and explain. \nA. 0.25 mg, B. 1 mg, C. 0.5 mg, D. 0.00 mg', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]