stion 10 IOP Company purchased a machine on 1/1/15 costing $500. Estimated life was 5 years, estimated salvage value was $100. In 2018, IOP discovered that the bookkeeper correctly used straight-line depreciation, but erroneously used an estimated life of 8 years in computing depreciation for the first 3 years of life et ered ts out of The Prior Period Adjustment to be recorded in 2018 will be: lag Select one: O a. $90 O b. $30 O C. $50 O d. $80 O e. $112.50