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': 'Hinge axis is located with the help of: \nSelect and explain. \nA. Ear rods, B. Maxillomandibular vertical relations, C. Kinematic facebow, D. Orbital pointer', 'role': 'user'}, {'content': 'Answer: C \nExplanation: True hinge axis is located with a kinematic facebow and arbitrarily by an arbitrary type facebow (ear piece/facia type).', 'role': 'assistant'}]