X-treme Vitamin Company is considering two investments, both of which cost $30,000. The cash flows are as follows: Year Project A 1 $32, eee 2 15, eee 3 6,000 Project B $30, eee 14,000 11, eee Use Appendix B for an approximate answer but calculate your final answer using the formula and financial calculator methods. a-1. Calculate the payback period for Project A and Project B. (Round your answers to 2 decimal places.) Project A Project B Payback Period year(s) year(s) a-2. Which of the two projects should be chosen based on the payback method? O Project A O Project B b-1. Calculate the net present value for Project A and Project B. Assume a cost of capital of 8 percent. (Do not round intermediate calculations and round your final answers to 2 decimal places.) Net Present Value Project A Project B b-2. Which of the two projects should be chosen based on the net present value method? O Project B O Project A c. Should a firm normally have more confidence in the payback method or the net present value method? Net present value method O Payback method