Martinez Inc., a calendar year-end company, acquired a machine on 1/1/X1 with the following attributes: Cost $ 80,000 Salvage Value $ 5,000 Total expected number of hours of use 20,000 hours Actual number of hours used in 20X1 2,000 hours Martinez Inc. uses the units-of-activity (or units-of-production) depreciation method. Question: How much depreciation expense should be recorded in 20X1? Select one: O a. $18,750 O b. $16,000 O c. $33,750 O d. $75,000 O e. $15,000 O f. $20,000 O g. $7,500 O h. $36,000