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': 'Carborundum is chemically known as \nSelect and explain. \nA. chromium carbide, B. nickel carbide, C. silicon carbide, D. aluminum carbide', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]