This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Death and postmortem changes, Subject name: Forensic Medicine
Greenish discoloration of the body first seen in the right iliac fossa after death is due to formation of - 
Select and explain. 
A. Sulph hemoglobin, B. Meth hemoglobin, C. Sulph - meth hemoglobin, D. None of the above
C: Sulph - meth hemoglobin
Answer: C: Sulph - meth hemoglobin 
Explanation: Greenish discolouration is due to formation of sulphmethaemoglobin by combinig hydrogen sulphide produced by bacteria with hemoglobin over right iliac fossa. Dr. Narayana Reddys Synopsis of Forensic Medicine & Toxicology 27 th edition pg. 83.