Dover Company began operations in 2020 and determined its ending inventory at cost and at a lower-of-cost-or-net realizable value (LCNRV) at December 31, 2020, December 31, 2021 and December 31, 2022 This information is presented below. Cost Net Realizable Value 12/31/2020 520,000 485,000 12/31/2021 615,000 585,000 12/31/2022 700,000 800,000 Instructions Prepare the journal entries required at December 31, 2020, December 31, 2021 and December 31, 2022, assuming that the inventory is recorded at LCNRV, using a perpetual system and the loss method.