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
Which lasers can be used to cure composite resins? 
Select and explain. 
A. Argon, B. NdYAG, C. ErYAG, D. CO2
A: Argon
Answer: A: Argon 
Explanation: None