Dragoo Building Inc. has a crane with a book value of $246,000 and a 4-year remaining life. A new crane is available at a cost of $621000. Dragoo can also receive $48,600 for trading in the old crane. The new crane will reduce variable costs by $145.600 per year over its four year life. The total impact to Dragoo over the crane's four-year life is: Multiple Choice O Decrease of $48.600 O Decrease of $621000 O increase of $23,000 O Increase of $10.000 O Decrease of $48,600. Decrease of $621,000. Increase of $23.000. Increase of $10,000. Decrease of $10,000