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': 'Axiopulpal line angle is bevelled in amalgam preparation to facilitate \nSelect and explain. \nA. Bulk for amalgam in this critical zone, B. Easy condensation of amalgam, C. For containment of amalgam within the matrix, D. To increase the strength of remaining tooth structure', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]