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
"Whistle"	is	a	word	substitute	for	explaining	the
following instrument in children - 
Select and explain. 
A. High speed hand piece, B. Suction apparatus, C. Low speed hand piece, D. Air syringe
A: High speed hand piece
Answer: A: High speed hand piece 
Explanation: None