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: Social & Preventive Medicine
[{'content': 'The safe limit of Fluorine in drinking water is – \nSelect and explain. \nA. 0.2–0.5 mg/L, B. 0.5–0.8 mg/L, C. 0.8–1.2 mg/L, D. 1.2–2.0 mg/L', 'role': 'user'}, {'content': 'Answer: B \nExplanation: The recommended level of fluoride in drinking water in the country is accepted as 0.5 to 0.8 mg/ Liter. -Park\nMaximum permissible limit is 1.5 mg/Lit.', 'role': 'assistant'}]