Activity 7-3: Greg Company supplied the following balances as of December 31. Advertising Expense 18,000 Cash 8,700 Accounts Receivable 25,450 Greg, Capital 69,300 Equipment 80,100 Accounts Payable 7,500 Accumulated Depreciation-Bldg. 88,450 Accumulated Depreciation-Equip. 67,100 Prepaid Insurance 1,500 Insurance Expense 2,900 Supplies 400 Land 45,000 Building 134,500 Salaries & Wages Payable 2,300 Unearned Revenue 2,000 Repairs Expense 11,500 Fees Earned 208,250 Salaries and Wages Expense 72,500 Utilities Expense 23,200 Depreciation Expense-Equipment 5,800 Depreciation Expense-Bldg 1,750 Miscellaneous Expense 4,050 Supplies Expense 1,550 Greg, Drawings 8,000 Required: A) Prepare adjusted trial balance B) Prepare closing entries C) Prepare a post-closing trial balance