At December 31, 2020, Hart Corp.'s unadjusted trial balance was as follows: Cash...... $ 42,220 Accounts Receivable.. 73,000 Allowance for Doubtful Accounts $ 1,050 Merchandise Inventory 45,580 Prepaid Rent......... 36,000 Investment in Pecan Corp. Bonds 86,000 Plant and Equipment...... 165,000 Accumulated Depreciation. 15,510 Accounts Payable 13,110 Bonds Payable.... 100,000 Common Shares 120,000 Retained Earnings. 156,640 Sales Revenue.. 248,000 Cost of Goods Sold. 172,400 Transportation-Out 13,000 Salaries and Wages Expense. 31,000 Interest Expense. 2,400 Rent Revenue ...... 18,800 Miscellaneous Expense 360 Insurance Expense.. 6,150 $673,110 $673,110 Additional data: a) The balance in the Insurance Expense account contains the premium costs of three policies: Policy 1, remaining cost of $1,800, 1-yr. term, effective August 1, 2019; Policy 2, original cost of $3,200, 3-yr. term, effective August 1, 2020; Policy 3, original cost of $1,150, 1-yr. term, effective March 1, 2020. b) On July 31, 2020, Hart received $18,800 rent from a lessee for an 18-month lease beginning on that date, which was credited to the Rent Revenue account. c) All depreciable assets are depreciated at 10% per year. However, any acquisitions and disposals during the year are depreciated at half this rate. There were no acquisitions of PPE during 2020. On December 31, 2019, the balance in the plant and Equipment account was $225,000. d) On December 27, 2020, the bookkeeper incorrectly credited Sales Revenue for a receipt on account from a regular customer of $12,000. e) At December 31, 2020, salaries accrued but unpaid were $3,800. f) Based upon an aging of the accounts, Hart Corp estimates that 5% of the Accounts Receivable balance on December 31, 2020 will become uncollectible. g) On September 1, 2020, Hart purchased, as a temporary investment, $86,000, 4% bonds of Ace Corp. at par. The bonds mature on September 1, 2023. Interest payment dates are February 28 and August 31. h) On Mar 31, 2020, Hart rented a warehouse for $3,000 per month, paying $36,000 in advance. Required: Record the necessary correcting and adjusting entries for the above transactions