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': 'Addition of synthetic resins to zinc oxide eugenol cement is said to \nSelect and explain. \nA. Increase the strength, B. Reduce solubility, C. Reduce film thickness, D. None of the above', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]