When comparing the units-of-output method of depreciation with straight-line depreciation: The depreciation expense in the first year will always be greater under units-of-output method. The depreciation expense in the first year will always be the same under both the methods. The depreciation expense in the first year will always be less under the units-of-output method. The depreciation expense in the first year may be greater than, equal to, or less under the units-of-output method