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: Pharmacology
[{'content': 'Rajat jain was presented to casuality in an unconscious state. His blood pressure was found to be 220/110 mm Hg. Most suitable drug for this patient to rapidly decrease the blood pressure is: \nSelect and explain. \nA. Sublingual nifedipine, B. Intramuscular injection of hydralazine, C. Intravenous infusion of sodium nitroprusside, D. Intravenous injection of clonidine', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]