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
To achieve caries reduction in adults the diet modification should be: 
Select and explain. 
A. Rich in calcium and vitamins, B. Restrict sugars to 5 times a day, C. Restrict sugars to 6 times a day, D. Restrict in between meals sugar intake
D: Restrict in between meals sugar intake
Answer: D: Restrict in between meals sugar intake 
Explanation: None