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
Vitreous humor is preserved in suspected poisoning with: FMGE 08 
Select and explain. 
A. Carbon monoxide, B. Anthrax, C. Alcohol, D. Morphine
C: Alcohol
Answer: C: Alcohol 
Explanation: Ans. Alcohol