In transformation in steel, hypo eutectoid steel are heated up to what temperature?

• A. 677¬¨¬®‚Äö√†√ªC
• B. 700¬¨¬®‚Äö√†√ªC
• C. 723¬¨¬®‚Äö√†√ªC
• D. 746¬¨¬®‚Äö√†√ªC