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
[{'content': 'Tear strength of which is least? \nSelect and explain. \nA. Poly Sulphide, B. Polyether, C. Addition Silicone, D. Condensation Silicone', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]