The Adjusted Trial Balance section of the worksheet for Van Zant Janitorial Supplies follows. The owner made no additional investments during the year. Accounts Debit Credit Cash $ 18,900 Accounts Receivable 60,100 Allowance for Doubtful Accounts $ 150 Merchandise Inventory 186,500 Supplies 7,170 Prepaid Insurance 3,090 Equipment 51,300 Accumulated Depreciation—Equipment 18,100 Accounts Payable 9,000 Social Security Tax Payable 1,420 Medicare Tax Payable 340 Steven Van Zant, Capital 278,700 Steven Van Zant, Drawing 74,300 Income Summary 180,300 186,500 Sales 774,500 Sales Returns and Allowances 14,700 Purchases 487,200 Freight In 5,700 Purchases Returns and Allowances 8,800 Purchases Discounts 5,600 Rent Expense 34,100 Telephone Expense 6,270 Salaries Expense 123,440 Payroll Taxes Expense 12,000 Supplies Expense 6,900 Insurance Expense 1,590 Depreciation Expense—Equipment 8,400 Uncollectible Accounts Expense 1,150 Totals $ 1,283,110 $ 1,283,110 Prepare a postclosing trial balance for the firm on December 31, 2019.