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
[{'content': 'Green blue postmoem discoloration is seen in which poisoning - \nSelect and explain. \nA. Cyanide, B. Carbon monoxide, C. Phosphorous, D. Hydrogen sulphide', 'role': 'user'}, {'content': 'Answer: D \nExplanation: The colour of postmoem hypostasis in hydrogen sulphide poisoning is bluish green. It is an asphyxiant which inhibits cytochrome oxidase. Dr.Narayana Reddys Synopsis of Forensic Medicine and Toxicology 27th edition pg. 76,313.', 'role': 'assistant'}]