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
The most effective, scientifically proven and cost efficient caries prevention program in children is: 
Select and explain. 
A. Enameloplasty, B. Oral health education, C. Pit and fissure sealants, D. ART
C: Pit and fissure sealants
Answer: C: Pit and fissure sealants 
Explanation: None