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
A dead body with suspected poisoning is having hypostasis of red brown in color. It is suggestive of poisoning due to: Maharashtra 08; DNB 10; PGI 07, 08, 10, 11 
Select and explain. 
A. Nitrites/Aniline, B. CO, C. Cyanides, D. Hydrogen sulfide
A: Nitrites/Aniline
Answer: A: Nitrites/Aniline 
Explanation: Ans. Nitrites/Aniline