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 biggest advantage of pulp revascularisation in endodontics is \nSelect and explain. \nA. Achieving continued root development, B. No additional material such as TCP or MTA is required, C. No obturation is needed, D. After control of infection, it can be completed in a single visit', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]