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
The type of bevel seen in this instrument is: 
Select and explain. 
A. Mesial bevel, B. Distal bevel, C. Circumferential bevel, D. None of the above
A: Mesial bevel
Answer: A: Mesial bevel 
Explanation: If one observes the inside of the blade curvature (or the inside of the angle at the junction of the blade and shank) and the primary bevel is not visible, the instrument has a distal bevel. Conversely, if the primary bevel is seen (from the same viewpoint), the instrument has a mesial (or “reverse”) bevel.