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': 'A 10-year-old boy, Pappu, died of acute rheumatic fever. All the following can be expected at autopsy except - \nSelect and explain. \nA. Aschoff nodules, B. Rupture of chordae tendineae, C. McCallum patch, D. Fibrinous pericarditis', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Rupture of chordae tendinae is a feature of chronic rheumatic heart disease.', 'role': 'assistant'}]