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': 'Advantages of light activated composite resins are: \nSelect and explain. \nA. Extended working time, B. Reduced resistance to wear or abrasion, C. Better resistance to wear or abrasion, D. All of the above', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]