9) Company C has a 21 percent marginal tax rate and uses an 8 percent discount rate to compute NPV. The company must decide whether to lease or purchase equipment to use for years 0 through 7. It could lease the equipment for $21,000 annual rent, or it could purchase the equipment for $100,000. The seller would require no money down and would allow Company C to defer payment until year 4 at 11.5 percent simple interest ($11,500 interest payable in years 1, 2, 3, and 4). The equipment would be seven-year MACRS recovery property with no residual value. Required: a. Calculate the after-tax cost if Company C leases the equipment. b. Calculate the after-tax cost if Company C buys the equipment. c. Should Company C lease or purchase the equipment to minimize the after-tax cost of the use of the property for eight years