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': 'Most common cause of surgically treatable male infeility is - \nSelect and explain. \nA. Varicocele, B. Cryptorchidism, C. Stricture urethra, D. Epidydimitis', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Varicocele", 'role': 'assistant'}]