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: Dental
Hypersensitivity is seen with following medicament? 
Select and explain. 
A. CHX, B. Povidone iodine, C. Oxygenated water, D. Peroxide (H2O2)
A: CHX
Answer: A: CHX 
Explanation: None