Sunland Company acquired a patent on an oil extraction technique on January 1, 2020 for $7200000. It was expected to have a 10 year life and no residual value. Sunland uses straight-line amortization for patents. On December 31, 2021, the future cash flows expected from the patent were $810000 per year for the next eight years. The present value of these cash flows, discounted at Sunland's market interest rate, is $4050000. At what amount should the patent be carried on the December 31,2021 balance sheet? $7200000. $6480000 $5760000. $4050000