12. Mom and Pop Grocery Stores is considering the purchase of a frozen yogurt machine expected to produce the following cash flows: Co C C -$5,000 +2,200 +2,800 +3,400 +1,000 40 D In other words, the machine costs $5,000 today but is projected to produce cash in-flows the next 4 years as given. The required rate of return is 15 percent. Determine the payback. Also evaluate this project using the best method