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
Interceptive and preventive orthodontics cannot be carried out after eruption of: 
Select and explain. 
A. Second premolars, B. First molars, C. Second molars, D. Third molars
C: Second molars
Answer: C: Second molars 
Explanation: None