Equipment with a cost of $225,000 has an estimated salvage value of $15,000 and an estimated life of 4 years or 10,000 hours. It is to be depreciated by the straight-line method. What is the amount of depreciation for the first full year, during which the equipment was used 2,700 hours?a. $56,250.b. $52,500.c. $56,700.d. $54,375.