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': 'For ZnOE, all of the following are true EXCEPT: \nSelect and explain. \nA. Olive oil is used as a plasticizer, B. Addition of methylmethacrylate increases strength., C. Addition of o – EBA in the concentration of 37 – 50 % increases strength, D. Rosin decreases the brittleness of set cement', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]