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
Peaso reamer is 
Select and explain. 
A. No. 4= 1.3 mm in size, B. Used for lingual shoulder removal, C. Flame shaped, D. high speed engine driven
A: No. 4= 1.3 mm in size
Answer: A: No. 4= 1.3 mm in size 
Explanation: None