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': 'Which one of the following is the treatment of choice for a 4cm retroperitoneal lymph node mass in a patient with non seminomatous germ cell tumor of the testis - \nSelect and explain. \nA. Radical radiotherapy alone, B. High Orchidectomy + RPLND, C. RPLND alone, D. High Orchidectomy alone', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]