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
Red brown colour postmoem staining seen in: 
Select and explain. 
A. Cyanide, B. Phosphorus, C. Carbon-monoxide, D. Aniline
D: Aniline
Answer: D: Aniline 
Explanation: D i.e. Aniline