Maxwell Software, Inc., has the following mutually exclusive projects. Year Project A Project B 0 $17,000 $20,000 1 10,500 11,500 2 7,000 8,000 3 2,600 7,000 a-1. Calculate the payback period for each project. (Do not round intermediate calculations and round your answers to 3 decimal places, e.g., 32.161.) Payback period Project A years Project B years a-2. Which, if either, of these projects should be chosen? Project A Project B Both projects Neither project b-1. What is the NPV for each project if the appropriate discount rate is 15 percent? (A negative answer should be indicated by a minus sign. Do not round intermediate calculations and round your answers to 2 decimal places, e.g., 32.16.) NPV Project A $ Project B $ b-2. Which, if either, of these projects should be chosen if the appropriate discount rate is 15 percent? Project A Project B Both projects Neither project