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
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 - 
Select and explain. 
A. HOCM, B. Right ventricular conduction Abnormality, C. Epilepsy, D. Snake bite
A: HOCM
Answer: A: HOCM 
Explanation: None