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': 'According to Ellis classification type of fracture? \nSelect and explain. \nA. Type 2, B. Type 3, C. Type 4, D. Type 9', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]