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': 'The device is used for \nSelect and explain. \nA. Vertical dimension, B. Horizontal dimension, C. Orientation jaw relation, D. All of the above', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Power point (maximum biting force):\xa0\nBoos (1940) demonstrated that the maximum biting force in an\xa0 individual is registered at vertical dimension at rest.\xa0\n\nThe method involved attaching a pressure indicating gauge which displayed the biting pressure, to a central bearing plate and screw on\xa0the occlusal rims as previously described.\xa0\nThe device is called bimeter and the maximum biting point is termed as power point.\xa0\nThe screw is adjusted to increase or decrease the vertical dimension\xa0and the bite force is recorded with each insertion. Boos stated that the vertical dimension of\xa0 occlusion is the rest position or maximum force minus 2 mm.', 'role': 'assistant'}]