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': 'GG drill works at \nSelect and explain. \nA. 750-1500 rpm, B. 1500-2500 rpm, C. 200-750 rpm, D. None of the above', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]