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 yield strength of Austenite (NiTi alloy) is: 
Select and explain. 
A. 100 Mpa, B. 240 Mpa, C. 560 Mpa, D. 700 Mpa
C: 560 Mpa
Answer: C: 560 Mpa 
Explanation: None