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': 'Largest tooth in the mandibular arch is: \nSelect and explain. \nA. Canine, B. Deciduous first molar, C. Permanent first molar, D. Third molar', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]