Granfield company has a plece of manufacturing equipment with a bookvalue of $43,000 and a remaining useful life of four years. At the end of the four years the equlpment will have a zero salvage value. The market value of the equipment is currently $22,600. Granfield can purchase a new machine for $126,000 and recelve $22,600 return for trading in Its old machine. The new machine will reduce variable manufacturing costs by $19.600 per year over the four-year life of the new machine. The total increase or decrease in net income by replacing the current machine with the new machine (gnoring the tme value of money is: O $25,000 increase O $78,400 decrease O $20,400 decrease O $54100 increase O $25,000 decrease