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': 'Inferior mesenteric vein drains into vein : \nSelect and explain. \nA. Splenic, B. Hepatic, C. Poal, D. Inf. vena cava', 'role': 'user'}, {'content': 'Answer: A \nExplanation: A. i.e. Splenic vein Inferior mesenteric vein begins as superior rectal vein & drains into splenic veinQ behind the body of pancreas. Inferior mesenteric vein receives superior rectal, sigmoid & left colic veins.', 'role': 'assistant'}]