Prepare any journal entries required for the depot and the asset retirement obligation at December 31, 2020. Ivanhoe uses straight-line depreciation; the estimated salvage value for the depot is zero. (Round answers to O decimal places, e.g. 5,275. If no entry is required, select "No Entry" for the account titles and enter O for the amounts. Credit account titles are automatically indented when amount is entered. Do not indent manually.) Date December 31, 2020 Account Titles and December 31, 2020 (To record depreciati SUPPORT