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': 'Aortic hiatus contains \nSelect and explain. \nA. Left gastric vein and thoracic duct, B. Thoracic duct and hemiazygos vein, C. Azygos vein and thoracic duct, D. Left vagus and thoracic duct', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Aortic hiatus contain azygous vein and thoracic duct', 'role': 'assistant'}]