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': 'An erupting tooth is filled with silver and copper oxyphosphate is known as: \nSelect and explain. \nA. Fissurotomy, B. Prophylactic odontectomy, C. PRP, D. ALL OF THE ABOVE', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]