9 Part 1 of 2 1.5 points Required information [The following information applies to the questions displayed below.] Wardell Company purchased a mainframe on January 1, 2019, at a cost of $54,000. The computer was depreciated using the straight-line method over an estimated five-year life with an estimated residual value of $6,000. 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 $3,600. 02:28:10 Required: 1. Prepare the year-end journal entry for depreciation in 2021. No depreciation was recorded during the year. (If no entry is required for a transaction/event, select "No journal entry required" in the first account field. Round your final answer to nearest whole dollar.) 1 No Answer is complete and correct. Event General Journal 1 Depreciation expense Accumulated depreciation-computer 00 Dobit 3,900 Credit 3,900