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
Calculate D3 for file with 2% taper, and D0 = 0.1 mm 
Select and explain. 
A. 0.16 mm, B. 0.18 mm, C. 0.20 mm, D. 0.30 mm
A: 0.16 mm
Answer: A: 0.16 mm 
Explanation: None