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': 'A 25 years old basket ballplayer suddenly collapsed while undergoing an athletic event and died. At autopsy the septum was hypertrophied. The most probable diagnosis is - \nSelect and explain. \nA. HOCM, B. Right ventricular conduction Abnormality, C. Epilepsy, D. Snake bite', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]