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': 'Chamfer finish line is given for metal crown. Crown is fitted accurately on die, but there is 0.3 mm gap is found intraorally. What will you do to maintain health of gingival tissue? \nSelect and explain. \nA. Reduce internal surface of occlusal side of crown to relieve pressure, B. Hand burnishing, C. Mechanical burnishing, D. Repeat the procedure by taking impression and fabrication.', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]