Payback and NPV Nell Corporation has three projects under consideration. The cash flows for each of them are shown in the following table The firm has a cost of capital of 13%. a. Calculate each project's payback period. Which project is preferred according to this method? b. Calculate each project's net present value (NPV). Which project is preferred according to this method? c. Comment on your findings in parts a and b, and recommend the best project. Explain your recommendation am) a. The payback period of project A is years. (Round to two decimal places.)