Below what temperature does a solder melt?

• A. 500¬¨¬®‚Äö√†√ªF
• B. 600¬¨¬®‚Äö√†√ªF
• C. 700¬¨¬®‚Äö√†√ªF
• D. 800¬¨¬®‚Äö√†√ªF