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
Full mouth disinfection is done in: 
Select and explain. 
A. 24 hours, B. 48 hours, C. 72 hours, D. 36 hours
A: 24 hours
Answer: A: 24 hours 
Explanation: None