Bridgeport Co. decides at the beginning of 2022 to adopt the FIFO method of inventory valuation. Bridgeport had used the average- cost method for financial reporting since its inception on January 1, 2022, and had maintained records adequate to apply the FIFO method retrospectively. Bridgeport concluded that FIFO is the preferable inventory method because it reflects the current cost of inventory on the statement of financial position. The following table presents the effects of the change in accounting policy on inventory and cost of goods sold. Inventory Determined by Cost of Goods Sold Determined by Date LIFO Method FIFO Method LIFO Method FIFO Method January 1, 2020 $0 $0 $0 $0 December 31, 2020 90 80 820 830 December 31, 2021 180 220 1,090 1,040 December 31, 2022 330 430 1,180 1,120 Retained earnings reported under average-cost are as follows. Retained Earnings Balance December 31, 2020 $1,220