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: Pathology
[{'content': 'Vegetations below the AV valves are present in - \nSelect and explain. \nA. Libman-Sacks endocarditis, B. Chronic rheumatic carditis, C. Acute rheumatic carditis, D. Non thrombotic endocarditis', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]