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
The laser used on a crown for debonding orthodontic bracket is known as 
Select and explain. 
A. Thermal softening, B. Thermal ablation, C. Photoablation, D. Laser debonding
D: Laser debonding
Answer: D: Laser debonding 
Explanation: None