At the end of the first year of operations, the balance sheet of Midwood Medical Supply showed the following account balances: Accounts Receivable, $5,000; Accounts Payable, $6,000; Inventory, $3,000; and Unexpired Insurance, $2,000. The corporation reported net income of $79,000 for the year, including depreciation expense of $5,000, and uses the indirect method of computing net cash flow from operating activities. Solely on the basis of this information, net cash flow from operating activities is

$78,000. $82,000. $77,000. $80,000.