Bartlow Pty Ltd had the following income statement for the month of May Sales revenue $428,000 205.440 Cost of goods sold Gross margin Less 222,560 Selling expenses Administrative expenses 81,320 72,760 S 68,480 Operating income 26. What was the sales revenue percent? A. 100% . 48% . 52% D. 16% 27. What was the selling expense percent? . 17% . 19% . 16% D. no correct answer 28. What was the administrative expense percent? A. 17% . 19% . 16% D. 15% 29. What was the operating income percent