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 of the following is not an objective of beveling finish line? \nSelect and explain. \nA. Cast metal can be burnished, B. Prevents weak enamel from chipping, C. To minimize marginal discrepancy while crown seating, D. To ensure proper recording during impression', 'role': 'user'}, {'content': 'Answer: D \nExplanation: The objective in beveling is threefold:\n\nTo allow the cast metal margin to be bent or burnished against the prepared tooth structure;\nTo minimize the marginal discrepancy caused by a complete crown that fails to seat completely (however, Pascoe has shown that when an oversized crown is considered, the discrepancy is\xa0increased rather than decreased; and\nTo protect the unprepared tooth structure from chipping (e.g., by removing unsupported enamel)', 'role': 'assistant'}]