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: Surgery
[{'content': 'The most common tooth to get impacted (excluding the third molars) is \nSelect and explain. \nA. Maxillary canine, B. Mandibular canine, C. Maxillary II premolar, D. Mandibular II premolar', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]