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 sharp line angles in gold  give which of the following: \nSelect and explain. \nA. Outline form, B. Convenience form, C. Resistance form, D. Retention form', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Sharp internal line and point angles are created in dentin to allow convenient “starting” gold foil as compaction begins. Rounded form is permitted when E-Z Gold is used to begin the restorative phase. Removal of remaining carious dentin, inal planing of cavosurface margins,\xa0and debridement complete the tooth preparation for direct gold.\nSturdevant operative dentistry, Seventh edition ; page no: e73', 'role': 'assistant'}]