Accounts receivable arising from sales to customers amounted to $80,000 and $70,000 at the beginning and end of the year, respectively. Income reported on the income statement for the year was $280,000. Exclusive of the effect of other adjustments, the cash flows from operating activities to be reported on the statement of cash flows is a. $280,000. b. $290,000. c. $350,000. d. $270,000.