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: Forensic Medicine
The non poisoning Salt of cyanide is : 
Select and explain. 
A. Potassium cyanide, B. Hydrocyanic acid, C. Sodium cyanide, D. Potassium ferroc yanide
D: Potassium ferroc yanide
Answer: D: Potassium ferroc yanide 
Explanation: D i.e. Potassium ferrocyanide