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': 'Carey coombs murmur is found  in: \nSelect and explain. \nA. Mitral Stenosis, B. Pulmonary Hypertension, C. Acute rheumatic fever, D. Aortic Stenosis', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Carey coombs murmur occurs\xa0in patients with mitral valvulitis\xa0due to acute rheumatic fever.', 'role': 'assistant'}]