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': 'The most common dental procedure contributing to vertical root fracture is \nSelect and explain. \nA. Prosthodontic treatment, B. Endodontic treatment, C. Periodontal treatment, D. Orthodontic treatment', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]