This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Thorax And Mediastinum, Subject name: Surgery
[{'content': "Which of the following are boundaries of Poirier's Triangle? \nSelect and explain. \nA. Arch of aoa, B. Left subclan aery, C. Veebral column, D. All of the above", 'role': 'user'}, {'content': "Answer: D \nExplanation: Poirier's Triangle . Boundaries: - Inferior-Arch of Aoa - Anterior- Left subclan aery - Posterior- veebral column Impoance- Identification of thoracic duct.", 'role': 'assistant'}]