Bruce Company purchased a tractor for $50,000 on January 2, 2020. The asset has an expected salvage value of $10,000 at the end of its five-year useful life. 11.What depreciation method is used if depreciation expense is $8,000 in 2021? a. Straight-line. b. Sum of years' digits. c. Double-declining balance. d. Composite. 12.What depreciation method is used if depreciation expense is $20,000 in 2020? a. Straight-line. b. Sum of years' digits. c. Double-declining balance. d. Composite