This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Kidney & Ureturs, Subject name: Surgery
[{'content': 'Name the operation shown here. \nSelect and explain. \nA. Boari flap operation, B. Young operation, C. Pierce operation, D. Nesbitt operation', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. (a) Boari Flap operation* Boari Flap operation - For lower ureteric injuries the bladder is used to reconstruct the gap as shown here.* Ureteric injury must be repaired immediately.', 'role': 'assistant'}]