You arein the market for a new refrigerator for your company's lounge, and you have narrowed the research down to two models.The energy-efficient model sells for $700 and will save you $45 at the end of each of the next five years in electricitycosts.The standard modelhas features similar to the energy-efficient model but provides no future saving in electricity costs.It is priced at only $500.Assuming your opportunity cost of funds is 6 percent.Which refrigerator should you purchase?