FedEx would like to acquire 300 vans for its business. It can buy each van for $35,000, depreciate it completely over 5 years, and then sell it for $10,000. The tax rate of FedEx is 30%, and its cost of debt is 10%. Avis Fleet Rental will lease these vans to FedEx for a period of 5 years at the annual rate of $6,500, paid in advance. FedEx will get the tax benefits of the lease at the end of each year. Should FedEx buy or lease these vans?