please explain the answer and provide used formulas

-22. (Caloulating the payback and discounted paybaok periods) The Bar-None Manufac. turing Company manufactures fence panels used in cattle feedlots throughout the Midwest. Bar-None's management is considering three investment projects for ber year but doesn't want to make any investment that requires more than three years to recover the firm's initial investment. The cash flows for the three projects (A,B, and C) are as follows: a. Given Bar-None's three-year payback period, which of the projects will qualify for acceptance? b. Rank the three projects using their payback periods. Which project looks the bet using this criterion? Do you agree with this ranking? Why or why not? c. If Bar-None uses a 10 percent discount rate to analyze projects, what is the discounted payback period for each of the three projects? If the firm still maintins its three-year payback policy for the discounted payback, which projects should the firm undertake