Penn Company is in the process of adjusting and correcting its books at the end of 2014. In reviewing its records, the following information is compiled. 1. Penn has failed to accrue sales commissions payable at the end of each of the last 2 years, as follows. December 31, 2013 December 31, 2014 $4,500 $2,700 2. In reviewing the December 31, 2014, inventory, Penn discovered errors in its inventory-taking procedures that have caused inventories for the last 3 years to be incorrect, as follows. December 31, 2012 Understated $16,800 December 31, 2013 Understated $22,200 December 31, 2014 Overstated $6,700 Penn has already made an entry that established the incorrect December 31, 2014, inventory amount. 3. At December 31, 2014, Penn decided to change the depreciation method on its office equipment from double-declining-balance to straight-line. The equipment had an original cost of $106,000 when purchased on January 1, 2012. It has a 10-year useful life and no salvage value. Depreciation expense recorded prior to 2014 under the double-declining-balance method was $39,000. Penn has already recorded 2014 depreciation expense of $12,300 using the double-declining-balance method. 4. Before 2014, Penn accounted for its income from long-term construction contracts on the completed-contract basis. Early in 2014, Penn changed to the percentage-of-completion basis for accounting purposes. It continues to use the completed-contract method for tax purposes. Income for 2014 has been recorded using the percentage-of-completion method. The following information is available. Pretax Income Percentage-of-Completion Completed-Contract $154,500 $114,000 62,500 21,800 Prior to 2014 2014 Prepare the journal entries necessary at December 31, 2014, to record the above corrections and changes. The books are still open for 2014. The income tax rate is 30%. Penn has not yet recorded its 2014 income tax expense and payable amounts so current-year tax effects may be ignored. Prior-year tax effects must be considered in item 4. (Credit account titles are automatically indented when amount is entered. Do not indent manually. If no entry is required, select "No Entry" for the account titles and enter o for the amounts.) Debit Credit No. Account Titles and Explanation 1. Retained Earnings ee 4,500 T Sales Commission Paya 2,700 T Sales Commission Expe 1800 . 2. Cost of Goods Sold Retained Earnings Inventory TAccumulated Depreciation Depreciation Expense | TConstruction in Process Deferred Tax Liability TRetained Earnings