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
Most ideally elastic among the following 
Select and explain. 
A. Polyether, B. Addition silicone, C. Polysulphide, D. Condensation silicone
B: Addition silicone
Answer: B: Addition silicone 
Explanation: None