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
Tooth pick with handle is known as : 
Select and explain. 
A. Perioaid., B. Periogaurd., C. Peridex., D. Periopaper.
A: Perioaid.
Answer: A: Perioaid. 
Explanation: None