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
Ultrahigh-speed rotary cutting tools rotate at 
Select and explain. 
A. <60,000 rpm, B. 60,000-3,00,000 rpm, C. 3,00,000-5,00,000 rpm, D. > 5,00,000 rpm
B: 60,000-3,00,000 rpm
Answer: B: 60,000-3,00,000 rpm 
Explanation: None