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
Which of the following is commonly recommended procedure for debridement 
Select and explain. 
A. Citric acid, B. Hydrogen peroxide-10%, C. Air and water spray, D. Hydrochloric acid
C: Air and water spray
Answer: C: Air and water spray 
Explanation: None