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': 'Cyst coming from an unerupted permanent tooth is \nSelect and explain. \nA. Dentigerous cyst, B. Epulis, C. Odontogenic keratocyst, D. None of the above', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Dentigerous cyst is most commonly arises from lower third molar teeth.', 'role': 'assistant'}]