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
[{'content': 'Carbon monoxide poisoning shows the following post-moem staining: \nSelect and explain. \nA. Cherry red postmoem staining, B. Pink postmoem staining, C. Chocolate coloured postmoem staining, D. Blue postmoem staining', 'role': 'user'}, {'content': 'Answer: A \nExplanation: In carbon monoxide poisoning, the colour of post moem staining is cherry-red. In poisoning by nitrites, potassium chlorate, potassium bicarbonate, nitrobenzene, acetanilide, bromates, and aniline the colour is chocolate brown. In asphyxia, the colour of the stains is deeply bluish-violet or purple. A bright pink colour is seen in hypothermia and bodies taken from cold water. Ref: The Essentials of Forensic Medicine and Toxicology by KS Narayan Reddy, 27th edition, Page 139.', 'role': 'assistant'}]