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
Dental floss is used to: 
Select and explain. 
A. Remove interdental plaque, B. Remove interdental food and debris, C. Massage gums, D. Prevent gingival recession
A: Remove interdental plaque
Answer: A: Remove interdental plaque 
Explanation: None