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': 'Scaler tip or Instrument used on a patient suffering from Hepatitis B should be: \nSelect and explain. \nA. Clean with water for 2 minutes, B. Cleaned in water and then autoclaved, C. Instrument should be burnt in flame, D. Do cleansing with spirit only', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]