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
[{'content': 'Interceptive and preventive orthodontics cannot be carried out after eruption of: \nSelect and explain. \nA. Second premolars, B. First molars, C. Second molars, D. Third molars', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]