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: ENT
[{'content': 'In a case of glottic carcinoma with fully mobile cords, the treatment of choice is - \nSelect and explain. \nA. Total laryngectomy, B. Radiotherapy, C. Hemilaryngectomy, D. Chemotherapy', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]