Suppose a firm is considering two projects. Project A generates an annual net cash flow of $2,800 over a 3-year life of the project and costs $5,000. Project B generates an annual net cash flow of $3,300 over a 4-year life of that project and costs $6,000. Assuming no increase in the cost of assets acquired by two projects over time, which would you rank highest? Assume a required rate of return of 6%. You only have to use one of the two approaches for evaluating projects with uneven lives.