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': 'The term ordered hardening heat treatment used in which of the following dental alloys? \nSelect and explain. \nA. Gold-Copper, B. Nickel-Chromium, C. Nickel-Titanium, D. Silver-Palladium', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]