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': 'True about thoracic duct : \nSelect and explain. \nA. It passes through aoic opening of diaphragm, B. It stas at the level of T3 veebra, C. It opens into superior vena cava, D. All', 'role': 'user'}, {'content': 'Answer: A \nExplanation: A i.e. It passes through aoic opening of daphragm', 'role': 'assistant'}]