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
Most common cause of sudden death is: 
Select and explain. 
A. Cerebral haemorrhage, B. Arrhythmias, C. Ruptured aortic aneurysm, D. Cancer
B: Arrhythmias
Answer: B: Arrhythmias 
Explanation: None