Required information [The following information applies to the questions displayed below.) Wardell Company purchased a mainframe on January 1, 2019, at a cost of $40,000. The computer was depreciated using the straight-line method over an estimated five-year life with an estimated residual value of $4,000. On January 1, 2021, the estimate of useful life was changed to a total of 10 years, and the estimate of residual value was changed to $400. 2. Prepare the year-end journal entry for depreciation in 2021. Assume that the company uses the sum-of-the-years' - digits method instead of the straight-line method. (If no entry is required for a transaction/event, select "No journal entry required in the first account field. Do not round intermediate calculations. Round your final answers to nearest whole dollar.) Credit No 1 Event 1 X Answer is complete but not entirely correct. General Journal Debit Depreciation expense 3,088 Accumulated depreciationcomputer 3,088%