Rae Services, Inc. provides healthcare diagnostics for patients with autoimmune diseases. At the end of their first year of operations, Rae Services account balances are shown in the adjusted trial balance shown below: Rae Services, Inc. Adjusted Trial Balance December 31, 2012 Cash Accounts receivable Supplies Prepaid insurance Equipment Accumulated depreciation-Equipment Accounts payable Common stock Retained earnings Dividends Service revenue Advertising expense Depreciation expense-Equipment Insurance expense Rent expense Salaries expense Supplies expense Utilities expense 174,500 141,500 4,650 2,200 85,800 66,000 2,500 3,700 1,200 9,600 165,000 3,700 67,000 240,000 120,000 230,731 1,405 3,376 661,431 661,431 a) Prepare closing entries. b) Prepare a post-closing Trial Balance