This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Toxicology - 1, Subject name: Forensic Medicine
Specimen for Toxicological (Chemical) analysis are commonly preserved using: 
Select and explain. 
A. Rectified spirit, B. Alcohol, C. 10% Formaldehyde, D. Saturated solution of sodium chloride
D: Saturated solution of sodium chloride
Answer: D: Saturated solution of sodium chloride 
Explanation: None