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': 'Nanofillers are in the range of: \nSelect and explain. \nA. 10 - 100 microns, B. 0.1 - 1 microns, C. 0.01 - 0.1 microns, D. 0.001 - 0.01 microns', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]