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
Which one of the following impression materials is elastic, sets by a chemical reaction and is catalyzed by chloroplatinic acid 
Select and explain. 
A. Condensation silicone, B. Polyether, C. Polysulfide, D. Poly vinyl siloxane
D: Poly vinyl siloxane
Answer: D: Poly vinyl siloxane 
Explanation: None