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': 'Golf-hole ureter is seen in \nSelect and explain. \nA. Ureteric calculus, B. Ureteral polyp, C. Tuberculosis of ureter, D. Retroperitoneal fibrosis', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]