Granfield Company has a piece of manufacturing equipment with a book value of $$35,500$ and a remaining useful life of four years. At the end of the four years the equipment will have a zero salvage value. The market value of the equipment is currently $$21,100.$ Granfield can purchase a new machine for $$111,000$ and receive $$21,100$ in return for trading in its old machine. The new machine will reduce variable manufacturing costs by $$18,100$ 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 $($ignoring the time value of money$)$ is:

Multiple Choice