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': 'Tributaries of the left renal vein are all except - \nSelect and explain. \nA. Left adrenal vein, B. Left testicular vein, C. Diaphragmatic vein, D. Left lumbar vein', 'role': 'user'}, {'content': 'Answer: D \nExplanation: In the left side, inferior phrenic vein, suprarenal vein, and the gonadal vein drains into left renal vein, whereas on the right side, they drain into inferior vena cava directly.', 'role': 'assistant'}]