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
Amount	of	reduction	in	dental	caries	achieved	by
dentifrices is: 
Select and explain. 
A. 20-35%, B. 35-40%, C. 40-50%, D. 50-60%
A: 20-35%
Answer: A: 20-35% 
Explanation: None