Maxwell Software, Inc., has the following mutually exclusive projects Year Project A Project B -$20,000 -$23,000 13,000 9,500 8,500 0 12,000 8,500 2,900 2 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 Project B years 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 16 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 16 percent? Project A Project B Both projects Neither project