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': 'All of the following pass through Aoic opening in diaphragm, except: \nSelect and explain. \nA. Azygos vein, B. Right phrenic nerve, C. Thoracic duct, D. Azygos vein', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Right phrenic nerve', 'role': 'assistant'}]