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 is the most common complication of of undescended testis \nSelect and explain. \nA. Torsion, B. Infertility, C. Epididymo-orchitis, D. Indirect inguinal hernia', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]