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': 'Rapid removal of rubber impressions with a single firm motion results in \nSelect and explain. \nA. Reduced dimensional instability, B. Improved adhesion of the impression to the tray, C. Minimal permanent deformation, D. Reduced contamination by saliva', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]