2. For the net cash flows given below, determine the following: (a) The net present value if MARR equals 20%. (b) The internal rate of return. (c) The payback period. . "O WE End of Year ONE Net Cash Flow -20,000 -20,000 ZUUUU 3 -20.000 6 -20,000 40,000 20,000 10,000 20,000 20,000 20,000 20,000 7 8 10