Question 22 (2 points) During September, 2021 Smith Corporation decided to change its estimate of the residual value of its machinery that was acquired in 2018. This will cause the amount of annual depreciation expense to increase over the prior amounts recorded in 2019 and 2018. Smith Corporation should a) restate the 2018 and 2019 financial statements due to the change in depreciation. b) record the new amount of depreciation expense in 2020 and all future periods. c) Smith is not permitted to make any changes to the depreciation for this machinery. They must continue to use the amounts calculated when the machinery was acquired in 2018. d) Record the difference in the depreciation amounts as a prior period