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 thickness of band material used with tofflemire retainer ranges from \nSelect and explain. \nA. 0.0508mm(0.02”), B. 0.0381mm(0.0015”), C. 0.0025mm(0.001”), D. 0.05mm(0.002”)', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Tofflemire retainer is available in .002” and a modified .001” varaiants.', 'role': 'assistant'}]