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
Scaler tip or Instrument used on a patient suffering from Hepatitis B should be: 
Select and explain. 
A. 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
B: Cleaned in water and then autoclaved
Answer: B: Cleaned in water and then autoclaved 
Explanation: None