Compute the (a) net present value, (b) internal rate of return (IRR), (c) modified internal rate of return (MIRR), and (d) discounted payback period (DPB) for each of the following projects. The firm's required rate of return is 13 percent. Year Project AB Project LM Project UV 0 $(90,000) S(100,000) S (96,500) 1 39,000 0 (55,000) 2 39,000 0 100,000 3 39,000 147,500 100,000 Which project(s) should be purchased if they are independent? Which project(s) should be pur- chased it they are mutually exclusive