Arnold Company is acquiring a new machine with a life of 5 years for use on its production line. The following data relate to this purchase: The new machine would replace an old fully-amortized machine. The old machine can be sold for $15,000 at the time the new equipment is acquired. The income tax rate is 30%, and the discount rate is 12%. Arnold uses the straight-line method for amortization on all machines (ignore the half-year convention). Note: some amounts are rounded. The present value of the cash flows for year 4 , excluding the maintenance, is: $21,319$28,951$23,545$21,624