2: A manufacturing company has purchased three assets: Atem Lothe Asset Type Truck Initial cost $45,000 $25,000 Building $800,000 Book life 12 years 200,000 miles 50 years MACRS class 7 years Salvage value $3,000 5 years $2,000 39 years $100,000 Book depreciation DDB Unit production (UP) SL Usage of the truck was 22,000 miles and 25,000 miles during the first two years, respectively. (a) Calculate the book depreciation for each asset for the first two years. (b) If the lathe is to be depreciated over the early portion of its life by the DDB method and then by a switch to the SL method for the remainder of its life. When should the switch occur