You are evaluating two different computer servers for the business you work for. Server X costs $450,000, has a three-year life and costs $50 000 per year to operate. Server B costs $650,000, has a five-year life, and costs $40,000 per year to operate. The relevant discount rate is 8 per cent and corresponds with the 8% beforetax cost of debt. Ignoring depreciation and taxes, compute the Annual Equivalent Cost (AEC) for both servers. Which one would be preferred?