Darth Corporation's most recent income statement shows net sales of $6000, and Darth's marginal tax rate is 40 percent. The total expenses reported were $3200, all of which were paid in cash. In addition, depreciation expense was reported at $800. A further examination of the most recent balance sheets reveals that accounts receivable during that period increased by $1000. The cash flow from operating activities reported by Darth should be（     ）。