هذه صفقه بيع اخ احمد يعني اذا سعر النفط انخفض تربح واذا ارتفع تخسر هذه الاليه تعمل بالعكس تماما من صفقه   شراء  
Based on the content, which of these categories does the news article belong to: spiritual, human-rights-press-freedom, business-and-economy, sports, science-and-technology, education, environment, health, art-and-entertainment, or politics? Return only the label without any explanation, justification or additional text.