Garrison Corporation purchased a depreciable asset for $420,000 on January 1, 2015. The estimated salvage value is $42,000, and the estimated total useful life is 9 years. The straight-line method is used for depreciation. On January 1, 2018, Garrison changed its estimates to a useful life of 5 years from the current date with a salvage value of $70,000. What is the 2018 depreciation expense? Select one: O a $44,800 Ob. $42,000 Oc $112,000 O d. $126,000 O e. $132,000