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: Surgery
Which of the following is most commonly used to disinfect dental units and hand pieces 
Select and explain. 
A. Clorox, B. Glutaraldehyde, C. Betadine, D. Ethyl alcohol
B: Glutaraldehyde
Answer: B: Glutaraldehyde 
Explanation: None