Granfield Company has a piece of manufacturing equipment with a book value of $40,000 and a remaining useful life of four years. At the end of the four years the equipment will have a zero-salvage value Granfield can purchase new equipment for $120,000 and receive $22,000 in return for trading in its current equipment The current equipment has variable manufacturing costs of $39,000 per year. The new equipment will reduce variable manufacturing costs by $19.000 per year over its four-year life. The total increase or decrease in income by replacing the current equipment with the new equipment is: Multiple Choice ) $18,000 decrease O $22,000 increase $22,000 decrease O $52,000 increase $76,000 increase O