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': 'Structures passing through the aoic hiatus of diaphragm are: \nSelect and explain. \nA. Aoa, B. Azygos vein, C. Thoracic duct, D. All', 'role': 'user'}, {'content': 'Answer: D \nExplanation: A. i.e. Aoa; B. i.e. Azygous Vein; C. i.e. Thoracic duct', 'role': 'assistant'}]