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': 'Firm way vegetations along the line of closure of valves is due to : \nSelect and explain. \nA. Rheumatic hea disease, B. Libman Sacks Endocarditis, C. NBTE, D. Infective Endocarditis', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Answer is A (Rheumatic Hea Disease) Firm way vegetations along lines of closure of valves are charachteristic of Rheumatic Hea disease', 'role': 'assistant'}]