What should the temperature ideally be to remove the casting after making of magnesium alloys?

• A. Below 450¬¨¬®‚Äö√†√ªC
• B. Below 300¬¨¬®‚Äö√†√ªC
• C. Below 350¬¨¬®‚Äö√†√ªC
• D. Below 300¬¨¬®‚Äö√†√ªC