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
Which of the following drugs can result in cyanide poisoning ? 
Select and explain. 
A. Sodium Nitroprusside, B. Amyl nitrite, C. Hydroxycobalamin, D. Sodium thiosulphate
A: Sodium Nitroprusside
Answer: A: Sodium Nitroprusside 
Explanation: None