Suppose this information is available for PepsiCo, Inc. for 2015, 2016, and 2017. (in millions) 2015 2016 2017 Beginning inventory $1,700 $2,200 $2,500 Ending inventory 2,200 2,500 2,700 Cost of goods sold 18,274 20,536 19,932 Sales revenue 38,842 42,607 43,469