If the change is permanent, what is the aggregate impact on NPV? $42,627 $496,734 O $6,394,013 $539,360 Single sale impact. Use the following information for next 4 questions A customer presently buys $500,000/month from your firm. It has promised to increase sales by 10% if you offer it 90-day terms (you presently extend 30-day terms). Your firm's opportunity cost is 8%. PV = FV / [1 + (5/365)(n) PV, Perp = CF k Cash Flow Per Period Interest Rate Per Period