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: Medicine
[{'content': 'Infective endocarditis is least likely to occur in: \nSelect and explain. \nA. VSD, B. ASD, C. Tetralogy of Fallot, D. Coarctation of aorta', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]