This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Congenital Malformations, Subject name: Pediatrics
[{'content': 'Blood supply of bronchogenic sequestration is: \nSelect and explain. \nA. Aoa, B. Pulmonary aery, C. Pulmonary Vein, D. Bronchogenic aery', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Bronchogenic sequestration refers to a discrete area of lung tissue that lacks any connection to the airway system. It has abnormal blood supply arising from aoa.', 'role': 'assistant'}]