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': '26 year old man died while playing. His autopsy of the heart revealed myocyte hypertrophy. Diagnosis is - \nSelect and explain. \nA. HOCM, B. DCM, C. Arrythmogenic cardiac problem, D. Restrictive cardiomyopathy', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]