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': 'A gnatho dynamometer is used to record: \nSelect and explain. \nA. Biting force, B. Centric relation, C. Vertical dimensions, D. FH plane', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]