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 amount of undercut required for a wrought wire clasp is 
Select and explain. 
A. 0.03 inch, B. 0.02 inch, C. 0.01 inch, D. 0.01 inch or less
B: 0.02 inch
Answer: B: 0.02 inch 
Explanation: None