This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Respiratory system, Subject name: Anatomy
[{'content': 'A young man with T.B presents with massive reccurere haemoptysis. For angiography treatment which vascular structure should be evaluated first \nSelect and explain. \nA. Pulmonary aery, B. Bronchial aery, C. Pulmonary vein, D. Superior vena cava', 'role': 'user'}, {'content': 'Answer: B \nExplanation: More significant hemoptysis can result from the proximity of the bronchial aery and vein to the air-way, with these vessels and the bronchus running together in what is often referred to as the bronchovascular bundle. Ref Harrison 19th edition pg 245-246', 'role': 'assistant'}]