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: Medicine
[{'content': "Rasmussen's aneurysm occurs due to \nSelect and explain. \nA. Veebral aery, B. Bronchial aery, C. pulmonary aery, D. Posterior intercostal aery", 'role': 'user'}, {'content': "Answer: C \nExplanation: Rasmussen's aneurysm is a pulmonary aery aneurysm adjacent or within a tuberculous cavity. It occurs in up to 5% of patients with such lesions. It may lead to rupture and haemorrhage.", 'role': 'assistant'}]