This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Poisoning, Subject name: Forensic Medicine
Dark brown P.M. lividity is seen in - 
Select and explain. 
A. Aniline, B. CO, C. Phosphorus, D. Hydrocyanide
C: Phosphorus
Answer: C: Phosphorus 
Explanation: Poison Color Nitrites Reddish brown Potassium chlorate Chocolate brown Phosphorus Dark brown Hydrogen sulphide Bluish green Cyanide Cherry red Carbon monoxide Pink Opium Blackish Ref: K.S.Narayan Reddy's Synopsis of Forensic Medicine and Toxicology, 29th edition, Chapter 27.