Grimwood Trucking purchased a tractor trailer for $171,500. Interline uses the units-of-activity method for depreciating its trucks and expects to drive the truck 1,000,000 miles over its 12-year useful life. Salvage value is estimated to be $24,500. If the truck is driven 90,000 miles in its first year, how much depreciation expense should Grimwood record? Select one: a. $13,230 b. $14,292 C. $12,250 d. $15,435 Sargent Corporation bought equipment on January 1, 2017. The equipment cost $360,000 and had an expected salvage value of $60,000. The life of the equipment was estimated to be 6 years. The depreciable cost of the equipment is Select one: a. $50,000. b. $200,000. C. $300,000 d. $360,000