During 20x5, Yamma Company discovered that its inventories were overstated by $10,000 and $20,000 at the end of 20x4 and 20x5, respectively. If the 20x5 books are still open, these errors will be corrected by debiting retained earnings, effect of error, and crediting inventory at: Multiple Choice $0 $10,000 $20,000 $30,000 Which of the following is a change in accounting policy? Multiple Choice O Correction of an error using the retroactive approach with restatement. Change from an incorrect accounting method to a correct method. Change in the depreciation method used, as a result of changed corporate reporting objectives. Change in the number of total expected service-miles for a truck depreciated under the units-of-production method