Concord Trucking purchased a tractor trailer for $164100. Interline uses the units of activity method for depreciating its trucks and expects to drive the truck 1000000 miles over its 12 year useful life. Salvage value is estimated to be $24400. If the truck is driven 100000 miles in its first year, how much depreciation expense should Concord record! $13970 $12990 $16410 $15032