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
It is true about formalin : 
Select and explain. 
A. That it can be used as preservative in alcohol poisoning, B. Never used as a preservative for chemical analysis, C. Used as a preservative in poisoning with digitals, D. None of the above
B: Never used as a preservative for chemical analysis
Answer: B: Never used as a preservative for chemical analysis 
Explanation: B i.e. Never used as a preservative for chemical analysis