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
Specimens for toxicological studies is preserved in: 
Select and explain. 
A. 10% of formaldehyde, B. Alcohol, C. Supersaturated solution of common salt, D. Normal saline
C: Supersaturated solution of common salt
Answer: C: Supersaturated solution of common salt 
Explanation: C i.e. Supersaturated solution of salt