Sweet Inc. began operations on January 1, 2018, and uses the FIFO method of pricing inventory. Management is contemplating a change in inventory methods for 2021 The following information s available for the years 2018-2020: Net Income Computed Using FIFO Method 2018 2019 2020 Average-Cost Method LIFO Method $106,000 $125,000 $79,000 71,000 82,000 49,000 143,000 166,000 131,000 (a) Prepare the journal entry necessary to record a change from the FIFO method to the average cost method in 2021. (Credit account titles are automatically indented when amount is entered. Do not indent manually. If no entry is required, select "No Entry" for the account titles and enter O for the amounts.) Account Titles and Explanation Debit Credit (b) Determine net income to be reported for 2018, 2019, and 2020, after giving effect to the change in accounting principle.