This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Kidney and ureter, Subject name: Surgery
[{'content': 'Anderson-Hynes operation is performed for:- \nSelect and explain. \nA. Achalasia cardia, B. Pyloric stenosis, C. Pseudopancreatic cyst, D. Pelviureteric junction obstruction', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Anderson-Hynes operation is performed for Pelviureteric junction obstruction caused by PUJ stenosis', 'role': 'assistant'}]