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
Microbrasion is a procedure in clinical orthodontics
performed to 
Select and explain. 
A. Clean the bracket base, B. Clean the archwire, C. Polishing the bracket, D. Removal of white spot lesions
D: Removal of white spot lesions
Answer: D: Removal of white spot lesions 
Explanation: None