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: Surgery
[{'content': 'Sequestrated lung is supplied most commonly by ? \nSelect and explain. \nA. Bronchial aeries, B. Descending aoa, C. Subclan aery, D. Intercostal aeries', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., Descending aoa", 'role': 'assistant'}]