You want to buy a new laptop computer and have obtained pricing information from two major retailer& Retailer A is offering a "no money down no interest" event You would pay $162.50 at the end of each month for the next 12 months. To purchase the same laptop from Retailer B, you will pay $500 today, and an additional $72.50 at the end of each month for the next 18 months. Which alternative is economically preferable if money is worth 6% compounded monthly? In current dollars, how much will you save by selecting the preferred alternative?