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: Radiology
A young man with tuberculosis presents with massive recurrent hemoptysis. Most probable cause would be. 
Select and explain. 
A. Pulmonary aery, B. Bronchial aery, C. Pulomary vein, D. Superior vena cava
B: Bronchial aery
Answer: B: Bronchial aery 
Explanation: B i.e. Broncheal aery In great majority of patients hemoptysis originates from systemic rather than pulmonary aeries and the bronchial vessels are almost universally involved. (Grainger) Massive hemoptysis in a patient of T.B. is usually d/ t erosion of bronchial aery which bleeds at systemic pressure.