Print Item Question Content Area Starling Co. is considering disposing of a machine with a book value of $20,100 and estimated remaining life of five years. The old machine can be sold for $5,400. A new high-speed machine can be purchased at a cost of 70,600. It will have a useful life of five years and no residual value. It is estimated that the annual variable manufacturing costs will be reduced from $22,800 to $20,200 if the new machine is purchased. The five-year differential effect on profit from replacing the machine is a(n) a.decrease of $67,860 b.increase of $67,860 c.decrease of $52,200 d.increase of $52,200