Markoff Products is considering two competing projects, but only one will be selected. Project A requires an initial investment of $42,000 and is expected to generate future cash flows of $6,000 for each of the next 50 years. Project B requires an initial investment of $210,000 and will generate $30,000 for each of the next 10 years. If Markoff requires a payback of 8 years or less, which project should it select based on payback periods?