Novell, Inc., has the following mutually exclusive projects. Year Project A Project B 0 $18,000 $21,000 11,000 12,000 2 7,500 8,500 3 2,700 7,500 1 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 years years a-2. If the company's payback period is two years, which, if either of these projects should be chosen? O Project A O Project B O 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.) Project A Project B b-2. Which, if either of these projects should be chosen if the appropriate discount rate is 16 percent? O Project A Project B O Both projects O Neither project