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
For the balance of hand cutting instrument: 
Select and explain. 
A. cutting edges of the working end should be centered over the Long axis of the handle, B. The cutting edge centered on a line running at right angle to the long axis of the handle, C. It should have shorter, straighter shank, D. It should have solid handle
A: cutting edges of the working end should be centered over the Long axis of the handle
Answer: A: cutting edges of the working end should be centered over the Long axis of the handle 
Explanation: None