Buchanan Compamy has 15,000 obsolete model cell phones that are carried in inventory at a cost of $1,800.000. If these cell phones are upgraded at a total cost of $630,000, they can be sold for a total of $750,000. Alternatively, Buchanan can sell the cell phones in their present condition for $160,000. Buchanan should: should keep the cell phenes in inventory because pursuing either atzenative would result in an unatceptssle loss bsued on theie origingl cost should skap the cell phones because the net advantage of doing so is $40,000 should scrap the cell phoses because the nct advantage of doing so is $160,000 should upgrade the cell phones because the net advantsge of doing so is $120,000