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': 'Stainless steel is used mostly in dentistry: \nSelect and explain. \nA. To strength amalgam, B. In orthodontic wires, C. To construct clasps for partial dentures, D. To replace internal gold restorations', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]