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
Subarachnoid hemorrhage blood is collected mostly in which pa of the skull - 
Select and explain. 
A. Basal cistern, B. Around Fah carebri, C. Near cerebellum, D. Tentorium
A: Basal cistern
Answer: A: Basal cistern 
Explanation: Answer- A. Basal cisterncausative factor-Exclude underlying aneurysmal ruptureTypical location-Basal cisternsClinical profileHeadache,meningismusdelayed manifestations,vasospasm