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
Sequestrated lung is supplied most commonly by ? 
Select and explain. 
A. Bronchial aeries, B. Descending aoa, C. Subclan aery, D. Intercostal aeries
B: Descending aoa
Answer: B: Descending aoa 
Explanation: Ans. is 'b' i.e., Descending aoa