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
Stainless steel orthodontic wire can be hardened by: (OR) Bending orthodontic wire at room temperature is an example of 
Select and explain. 
A. Tempering, B. Work/ Strain hardening, C. Age hardening, D. Precipitation hardening
B: Work/ Strain hardening
Answer: B: Work/ Strain hardening 
Explanation: None