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': 'Which of the following is false about portal vein? \nSelect and explain. \nA. Formed behind the neck of pancreas, B. Bile duct lies anterior & right to it, C. Gastro duodenal artery lies to the left & anterior to it, D. Ascends behind the 2nd part of duodenum', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Portal vein ascends behind the first part of the duodenum.\nOther options are correct.', 'role': 'assistant'}]