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': 'Which of the following will produce the most rigid restoration for framework of same dimension? \nSelect and explain. \nA. Wrought alloy, B. Palladium alloys, C. Cobalt-chrome alloys, D. Partial denture casting gold in hardened condition', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]