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: Surgery
[{'content': 'Subarachnoid hemorrhage blood is collected mostly in which pa of the skull - \nSelect and explain. \nA. Basal cistern, B. Around Fah carebri, C. Near cerebellum, D. Tentorium', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Answer- A. Basal cisterncausative factor-Exclude underlying aneurysmal ruptureTypical location-Basal cisternsClinical profileHeadache,meningismusdelayed manifestations,vasospasm', 'role': 'assistant'}]