Tractor plus, is selling off some old equipment it no longer needs because its associated project has come to an end. The equipment originally cost $22,500, of which 75% has been depreciated. The firm can sell the used equipment today for $6,000, and its tax rate is 40%. What is the equipment's after-tax salvage value for use in a capital budgeting analysis? Note that if the equipment's final market value is less than its book value, the firm will receive a tax credit as a result of the sale. a. $5,558 b. $5,850 c. $6,143 d. $6,450 e. $6,772 f.9,362