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': 'Advantage of shoulder finish line is \nSelect and explain. \nA. It is more conservative, B. It is easy to prepare, C. Provides bulk of material, D. All of the above', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]