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 and Peaso reamers are \nSelect and explain. \nA. Low speed engine driven instruments, B. Classified in ISO Group 1, C. Hand instruments, D. Cleaning and shaping instruments', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]