This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Abdomen & Pelvis, Subject name: Anatomy
[{'content': 'Structures passing through aortic opening in diaphragm are all EXCEPT: \nSelect and explain. \nA. Aorta, B. Azygous vein, C. Thoracic duct, D. Vagus nerve', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ans. (d) Vagus nerveRef: BDC 6th ed. vol. II / 333', 'role': 'assistant'}]