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': 'Function of sodium borate in embalming fluid is \nSelect and explain. \nA. Anticoagulant, B. Preservative, C. Buffer, D. Vechile', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Buffer', 'role': 'assistant'}]