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': 'Second pa of duodenum not related posteriorly to? \nSelect and explain. \nA. IVC, B. Psoas major, C. Bile duct, D. Renal aery', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., Bile duct", 'role': 'assistant'}]