An equipment was purchased for $140,000. It had an estimated salvage value of $35,000 and an estimated useful life of 5 years. After 4 years of use (depreciation already recorded), the estimated salvage value is changed to $8,000 and the estimated useful life is changed to 12 years. Assuming straight-line depreciation, the revised depreciation expense in Year 5 would be Select one: O a. 7,000 O b. 11,900 O c. 6,000 O d. 8,000