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': 'According to Mount and Hume classification, an enlarged carious lesion in contact area region will be denoted as: \nSelect and explain. \nA. 1.3, B. 2.3, C. 3.2, D. 2.2', 'role': 'user'}, {'content': 'Answer: B \nExplanation: MOUNT AND HUME CLASSIFICATION', 'role': 'assistant'}]