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 not true regarding varicocele \nSelect and explain. \nA. Testicular veins involved, B. More common on the right side, C. May be the first feature of a renal tumour, D. Feels like a bag of worms', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]