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': 'Composite bandage on tooth is to be required when the amount of remaining dentin thickness is: \nSelect and explain. \nA. >2mm, B. 0.5-2mm, C. <0.5mm, D. All of the above.', 'role': 'user'}, {'content': 'Answer: B \nExplanation: When the remaining dentin thickness is 0.5-2mm then their is need to protect underlying dentinal tubules that is composite bandage on tooth.', 'role': 'assistant'}]