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
According to Glickman, maximum accumulation of plaque takes place in approximately 
Select and explain. 
A. 7 days, B. 15 days, C. 30 days, D. 60 days
C: 30 days
Answer: C: 30 days 
Explanation: None