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': 'Which type of articulators permit horizontal as well as vertical motion, but do not orient the motion to the TMJ via facebow transfer? \nSelect and explain. \nA. Class I, B. Class II, C. Class III, D. Class  IV', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Class II articulator:\n\nArticulator which permit horizontal and vertical motion but they do not orient the movement to TMJ with a facebow.\nThree types.', 'role': 'assistant'}]