Your firm is considering a project that would require purchasing $7.2 miion worth of new equipment. Calculate the present value of the depreciation tax shield associated with this equipment if the firm's corporate tax rate is 30%, the appropriate cost of capital is 9% and the equipment can be depreciated in the following manner. a) Straight-line over a 10-year period, with the first deduction taken at the end of year 1. b) Straight-line over a 5-year period, with the first deduction taken at the end of year 1 c) Fully as an immediate deduction today