This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Central Nervous system, Subject name: Pharmacology
[{'content': 'Calcium channel blocker used in subarachnoid hemorrhage \nSelect and explain. \nA. Nefidipine, B. Nicardipine, C. Nimodipine, D. Nitrendepine', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Nimodipine is a cerbroselective calcium channel blocker used in SAH.Ref: KD Tripathi 6th ed pg 532', 'role': 'assistant'}]