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 reactions like contact dermatitis can be caused by 
Select and explain. 
A. polysulfides, B. condensation silicones, C. addition silicones, D. polyether
D: polyether
Answer: D: polyether 
Explanation: None