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
Chocolate Brown postmortem staining is seen in – 
Select and explain. 
A. H S Poisoning, B. Opium Poisoning, C. KCl Poisoning, D. Cyanide poisoning
C: KCl Poisoning
Answer: C: KCl Poisoning 
Explanation: In poisoning by nitrites, potassium chlorate, nitrobenzene, potassium bicarbonate and aniline the colour of postmortem hypostasis is chocolate brown due to methemoglobinemia.