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
Peso reamer is used for: 
Select and explain. 
A. To remove lingual shoulder of anterior teeth, B. To enlarge root canal orifices, C. Post space preparation, D. to remove guttapercha
C: Post space preparation
Answer: C: Post space preparation 
Explanation: None