What is the maximum allowable temperature at which High-Speed Steels retain good cutting ability?$

What is the maximum allowable temperature at which High-Speed Steels r

1.	What is the maximum allowable temperature at which High-Speed Steels retain good cutting ability?$
A.	100<sup>o</sup>C
B.	200<sup>o</sup>C
C.	350<sup>o</sup>C
D.	540<sup>o</sup>C
Answer» E.