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': 'As compared to UV light, visible light can cure \nSelect and explain. \nA. Greater depth of resin, B. Lesser depth of resin, C. Only superficial layer, D. None of the above', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]