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
If the speed of the aerotor hand piece is increased to
100,000 rpm then. 
Select and explain. 
A. Decreased vibration perception to the patient, B. More heat is generated resulting in pulpal damage, C. High efficiency, D. all of the above
D: all of the above
Answer: D: all of the above 
Explanation: None