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': 'High inguinal orchidectomy showed tumor involving epididymis.\nWhat is the t stage \nSelect and explain. \nA. T1, B. T2, C. T3, D. T2b', 'role': 'user'}, {'content': 'Answer: A \nExplanation: T stage', 'role': 'assistant'}]