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
[{'content': 'Preservative used for alcohol poisoning is : \nSelect and explain. \nA. Formalin, B. Saturated solution of sodium chloride, C. Methyl alcohol, D. None of the above', 'role': 'user'}, {'content': 'Answer: D \nExplanation: D i.e. None', 'role': 'assistant'}]