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': 'Tooth is removed before radiotherapy to avoid all except: \nSelect and explain. \nA. Radiation pulpitis, B. Radiation caries, C. Osteoradionecrosis, D. None', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Tooth in the line of fire: (Radiotherapy)\nRadiation Beam\nTooth removed Prophylactically,\n\n\nTo avoid radiation Pulpitis\nRadiation caries\nOsteoradionecrosis', 'role': 'assistant'}]