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': 'First dentin bonding agent to receive ADA acceptance: \nSelect and explain. \nA. Clearfill, B. Cervident, C. Scotchbond 2, D. Sevitron', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Scotchbond 2 was the First dentin bonding system to receive “provisional” and “full acceptance” from the American Dental Association (ADA).\xa0It is an example of 3rd\xa0generation dentin bonding agent.\nSturdevant 7th edition page 143', 'role': 'assistant'}]