On Jan 1, 2017, Acme Industries put into service a milling machine that had a capitalized acquisition cost of $22,500, a useful life of 15 years, and an estimated salvage value of $0 (zero). Annual depreciation expense was calculated as $1,500/yr on a straight-line basis. On Jan 1, 2020, Acme revises the total useful life estimate from 15 years to 12 years. What is Acme's annual depreciation expense for the machine in 2020? $1,500 O $2,500 O $1,750 $2,000