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Novell, Inc, has the following mutually exclusive projects 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.) a.2. If the company's payback period is two years. which, if either, of these projects should be chosen? Project A Project B Both projects 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.) b-2. Which, if eithet, of these projects should be chosen if the appropriate discount rate is 15 percent? Project A Project B Both projects Neither project