i dont know how to do this. help me please

Suppose your firm is considering two mutually exclusive, required projects with the cash flows shown below. The required rate of return on projects of both of their risk class is 12 percent, and that the maximum allowable payback and discounted payback statistic for the projects are 2 and 3 years, respectively 0 39,000 1 29,000 23 49,000 20,000 Time: Project A Cash Flow Project B Cash Flow 49,000 29,000 1000 69000 Use the payback decision rule to evaluate these projects, which one(s) should it be accepted or rejected? Multiple Choice O accept A, rejecte O coept both A and B ooo accept the Amor orect AB to search