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
[{'content': 'Which lasers can be used to cure composite resins? \nSelect and explain. \nA. Argon, B. NdYAG, C. ErYAG, D. CO2', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]