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: Surgery
During surgical exploration for hydatid cyst of the liver, any of the following agents can be used as scolicidal agent except - 
Select and explain. 
A. Hypeonic sodium chloride, B. Formalin, C. Cetrimide, D. Povidone Iodine
D: Povidone Iodine
Answer: D: Povidone Iodine 
Explanation: Ans. is 'd' i.e., Povidone Iodine