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': "Following can cause rib notching except: \nSelect and explain. \nA. Blalock Taussig shunt, B. Waterston Cooley's shunt, C. Pulmonary atresia with large VSD, D. All", 'role': 'user'}, {'content': "Answer: B \nExplanation: B i.e. Waterston Cooley's shunt", 'role': 'assistant'}]