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 newly erupted tooth: 
Select and explain. 
A. Is protected by dental plaque, B. Has an early immunity to caries, C. Has a high affinity for fluoride, D. All of the others
C: Has a high affinity for fluoride
Answer: C: Has a high affinity for fluoride 
Explanation: None