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
A 50 year old male presents with malignant hypertension. The drug of choice is: 
Select and explain. 
A. Sodium nitroprusside, B. Sublingual nifedipine, C. Furosemide, D. Enalapril
A: Sodium nitroprusside
Answer: A: Sodium nitroprusside 
Explanation: None