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': 'True about Naber’s probe except \nSelect and explain. \nA. Used for Furcation area, B. Horizontal direction of probing, C. Has marking 3,6,9,12, D. Can be used in anterior teeth also', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]