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': 'All are therapeutic role of recording base, except? \nSelect and explain. \nA. Establishment of VDR, B. Establishment of VDO, C. For chewcking under/overextended borders of final impression, D. Determination & recording of CR', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]