Cayton Company putchased tool sharpening equipment on October 1 for 544,820 . The equipment was expected to have a useful life of 3 years or 3,780 operating hours, and a residual tralue of 51,350 . The equipment was used for 700 hours during Year 1,1,300 hours in Year 2,1,100 hours in Year 3 , and 680 hours in Year 4 . Required: Determine the amount of depreciation expense for the years ended December 31, Yes 1, Year 2, Year 3, and Year 4, by (a) the straight-line method, (b) the anits-of-activity method, and (c) the double-declining-balance method. Note: FOR DECIINING BALANCE ONLY, round the multiplier to four decimal ploces. Then round the answer for each vear to the nearest whole dollar. a. Straight-line method b. Units of activity method b. Units-of-activity method c. Double-declining-balance method