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': 'Linear coefficient of thermal expansion of metal used in metal ceramic restoration range from \nSelect and explain. \nA. 11.5-12.5 x 10-6/degree Celsius, B. 10.5-11.5 x 10-6/degree Celsius, C. 13.5-14.5 x 10-6/degree Celsius, D. 16.5-17.5 x 10-6/degree Celsius', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]