This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: FMGE 2019, Subject name: ENT
[{'content': 'Treatment of choice in nasopharyngeal carcinoma. \nSelect and explain. \nA. Chemotherapy, B. Radiotherapy, C. Chemo given with radiation, D. Surgery', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Radiotherapy: It is the treatment of choice for nasopharyngeal cancer. Stage I and II are treated by radiotherapy alone while Stage III and IV require concomitant radiation and chemotherapy or radiation followed by chemotherapy.', 'role': 'assistant'}]