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
What poisoning retards putrefaction : 
Select and explain. 
A. Phosphorus, B. Arsenic, C. Mercury, D. Lead
B: Arsenic
Answer: B: Arsenic 
Explanation: B i.e. Arsenic