What is the temperature at the negative terminal in carbon arc welding?

• A. 3000¬¨¬®‚Äö√†√ªC
• B. 3100¬¨¬®‚Äö√†√ªC
• C. 3200¬¨¬®‚Äö√†√ªC
• D. 3300¬¨¬®‚Äö√†√ªC