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': 'Whats the minimum dose required for Tetracycline staining? \nSelect and explain. \nA. 5 mg/kg body weight, B. 20 mg/kg body weight, C. 25 mg/kg body weight, D. 10 mg/kg body weight', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]