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
[{'content': 'Rib notching is found in – a) Neurofibromatosisb) Lymphangiomyomatosisc) Aortic aneurysmd) Taussig-Bing operatione) Aortic obstruction \nSelect and explain. \nA. acd, B. ade, C. abd, D. ad', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Neurofibromatosis and aortic obstruction (thrombosis) may cause rib notching.\nTaussig - bing malformation, when associated with coarctation of aorta, can cause rib notching.', 'role': 'assistant'}]