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
The particle size in microfilled composites is 
Select and explain. 
A. 0.02 to 0.04 mm, B. 0.5 to 1.0 microns, C. 0.01 to 0.1 microns, D. 0.3 to 0.4 mm
C: 0.01 to 0.1 microns
Answer: C: 0.01 to 0.1 microns 
Explanation: None