6:04 AM Best Construction purchased a delivery truck on April 1, 2021. The following information is available: Cost = $90,000 Estimated service life = 8 years Estimated residual value = $18,000 The company records partial-year depreciation based on the number of months in service. Calculate depreciation expense for the year ended December 31, 2021, using straight-line depreciation. . Group of answer choices $6,750. $8,437.50 $9,000. $7,500. 6:05 AM