This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cerebrovascular Diseases, Subject name: Surgery
[{'content': 'Most common cause of subarachnoid hemorrhage is:- \nSelect and explain. \nA. Hypeension, B. AV malformation, C. Berry aneurysm, D. Tumors', 'role': 'user'}, {'content': 'Answer: C \nExplanation: MC cause of subarachnoid hemorrhage : Trauma > Spontaneous rupture of Berry Aneurysm', 'role': 'assistant'}]