During normalizing process of steel, the specimen is heated

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During normalizing process of steel, the specimen is heated

1. between the upper and lower critical temperature and cooled in still air
2. above the upper critical temperature and cooled in furnace
3. above the upper critical temperature and cooled in still air
4. between the upper and lower critical temperature and cooled in furnace

Correct Option: C

LCT-Lower Critical Temperature
UCT-Upper Critical Temperature