25. Assume there are 91 days in a quarter. Boeing reported in it's fourth quarter FY'18 re- port that it had $22,090,000,000 in cost of goods sold, $28,341,000,000 in sales revenue, $78,400,000,000 in accounts payable, $14,364,000,000 in account receivables, and $62,567,000,000 in inventory. How many days after paying it's bills did Boeing need to wait to receive it's cash as a result of a sale? (a) -10 days (b) -5 days (c) 5 days (d) 10 days