What is the post-heated temperature of plain carbon steel?

A. 100 Degree Centigrade to 300 Degree Centigrade

B. 350 Degree Centigrade to 400 Degree Centigrade

C. 400 Degree Centigrade to 500 Degree Centigrade

D. 500 Degree Centigrade to 550 Degree Centigrade

Correct Answer: 100 Degree Centigrade to 300 Degree Centigrade