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': 'In recording the border movement in the vertical plane, name the tracing produced by it: \nSelect and explain. \nA. Diamond tracing, B. Beak tracing, C. Shield tracing, D. None', 'role': 'user'}, {'content': "Answer: C \nExplanation: Border movement is the mandibular movement at the limits dictated by anatomic structures as viewed in a given plane.\nBorder movement recorded in: \n• Horizontal plane produces characteristic 'diamond tracing'.\n• Sagittal plane produces 'Beak tracing.\n• Vertical plane produces 'Shield tracing'\n• Combination of border movements in all three planes produces 'Envelop' of motion.", 'role': 'assistant'}]