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 body is brought for autopsy. On postmoem, there is dark brown postmoem staining and garlic odor in stomach. The poisoning is most likely due to: BHU 10 
Select and explain. 
A. Hydrocyanic acid, B. Carbon dioxide, C. Aniline dye, D. Phosphorus
D: Phosphorus
Answer: D: Phosphorus 
Explanation: Ans. Phosphorus