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': 'Bacterial endocarditis is rarely seen in - \nSelect and explain. \nA. VSD, B. PDA, C. MVP, D. Ostium secundum ASD', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]