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': 'Based on the ability to simulate jaw movement, articulators which permit horizontal and vertical movements and do accept face bow transfer, but with limited facility: \nSelect and explain. \nA. Class 1, B. Class 2, C. Class 3, D. Class 4', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]