Shelton Co has a crane with a book value of $241,000 and a 4-year remaining Me. A new crane is available at a cost of $616,000. Sheton can also receive $48,100 for trading in the old crane. The new crane will reduce variable costs by $145,100 per year over its four-year life. The total impact to Shelton Co. over the crane's four-year life is Multiple Choice Decrease of $48.00 Decrease of $12,500 Increase of $12.500. Decrease of $616,000