Average rate of return, cash payback period, net present value method for a service company yearly net cash flows of $49,000. The company's minimum desired rate of return for net present value analysis 12%. Drecent Val nf an nnuity nf $1 at Comnnund Tnterect Compute the following: a. The average rate of return, giving effect to straight-line depreciation on the investment. If required, round your answer to one decimal place. % b. The cash payback period. c. The net present value. Use the above table of the present value of an annuity of $1. Round to the nearest dollar. If required, use a minus sign to indicate negative net present value for current grading purpose