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: Anatomy
[{'content': 'A patient presented with pain in right testis Examination reveals bay of worms suggestive of varicocele. Right testicular vein drains into \nSelect and explain. \nA. Hemiazygous vein, B. IVC, C. Inferior mesentric vein, D. Renal vein', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Right testicular vein drains into IVC\nLeft testicular vein drains into left renal vein', 'role': 'assistant'}]