Novell, Inc., has the following mutually exclusive projects. Year Project A Project B 0 $22,000 23 $19,000 11,500 12,500 9,000 8,000 2,800 8,000 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.) Project A Project B a-2. If the company's payback period is two years, which, if either, of these projects should be chosen? Project A O Project B years years Both projects O 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.) Project A Project B b-2. Which, if either, of these projects should be chosen if the appropriate discount rate is 15 percent? O Project A O Project B Both projects O Neither project