28. In fiscal 2017, Alfa Ltd's sales reached $ 1,000,000 of which 85% is credited. The opening balance for accounts receivable was $ 60,000 and the closing balance was $ 140,000. What is the amount of the collection of accounts receivable in fiscal year 2017? (a) $ 930,000 (b) 850,000 (c) 770,000 (d) 710,000 (e) None of the above