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': 'Specimens of toxicological studies are preserved in ? \nSelect and explain. \nA. 10% of formaldehyde, B. Alcohol, C. Supersaturated solution of common salt, D. Rectified spirit', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., Supersaturated solution of common salt Most common preservative for toxicological specimen is saturated solution of sodium chloride (NaC1).", 'role': 'assistant'}]