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
True about Naber’s probe except 
Select and explain. 
A. Used for Furcation area, B. Horizontal direction of probing, C. Has marking 3,6,9,12, D. Can be used in anterior teeth also
D: Can be used in anterior teeth also
Answer: D: Can be used in anterior teeth also 
Explanation: None