L06 P3-9B. Closing Entries The adjusted trial balance for Okay Moving Service as of December 3 l is a oWS Adjusted Trial Balance Debit Credit 5,250 5,300 3,000 30,300 $ 10,000 7,600 2,100 1,200 6,700 10,000 16,050 7,500 80,500 29,800 10,200 4,900 5,100 8,000 4,000 800 Required a. Prepare the closing entries at December 31 directly to Retained Earnings in general journal form b. After the closing entries are posted, calculate the ending balance in the Retained Earnings account. c. Prepare a post-closing trial balance