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 matrix band for restoring a Class-I with lingual extension is \nSelect and explain. \nA. Tofflemire, B. Ivory No.8, C. Barton, D. T band', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]