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': 'Viterous humor is preserved in: AIIMS 07 \nSelect and explain. \nA. HCl, B. Fluoride, C. Formalin, D. Xylol', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. Fluoride', 'role': 'assistant'}]