This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Abdomen and pelvis, Subject name: Anatomy
[{'content': 'The right adrenal vein drains into \nSelect and explain. \nA. Right renal vein, B. Inferior vena cava, C. Second right lumbar vein, D. Third right lumbar vein', 'role': 'user'}, {'content': 'Answer: B \nExplanation: These blood vessels supply a network of small aeries within the capsule of the adrenal glands. Venous blood is drained from the glands by the suprarenal veins, usually, one for each gland: The right suprarenal vein drains into the inferior vena cava. ref - semantischolar.org', 'role': 'assistant'}]