Jay Company purchased a machine on July 1, 20x1 for $60,000. The expected useful life of the machine is 15 years and the expected salvage value at the end of its useful life is $5,000. Depreciation expense for the year ended December 31, 20x1 is $4,000. Which method of depreciation was use to calculate the depreciation expense? O Units-of-production O Straight-line O Sum-of-the-years-digits Double-declining balance

Jay Company purchased a machine on July 1,201 for $60,000. The expected useful life of the machine is 15 years and the expected salvage value at the end of its useful life is $5,000. Depreciation expense for the year ended December 31,201 is $4,000. Which method of depreciation was use to calculate the depreciation expense? Units-of-production Straight-line Sum-of-the-years-digits Double-declining balance