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': 'With which of the following instrument stability is highest during scaling and root planning? \nSelect and explain. \nA. Files, B. HOE scaler, C. Chisel, D. Sickle scaler', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]