Moonlight Company is thinking about acquiring a new equipment for Rp80,000. The new facility will generate net cash inflows of Rp20,000 annually for six years. At the end of year six the equipment will have no residual value. The company uses the straight-line depreciation method, and its owners require an annual return of 12% on such investments. Compute the following: a) the payback period, b) the accounting rate of return, c) the net present value, d) the internal rate of return, and e) the profitability index of this investment. (10 points)