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': 'Clogging of an abrasive wheel with debris causing reduction of abrasive action is called \nSelect and explain. \nA. Blinding, B. Buffing, C. dressing, D. truing', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]