Star Company offered the following data for the fiscal year 2017: a. cost of goods sold =$85.000; b. common stock equity =$100.000; c. net profit margin =10%; d. operating expenses =$20.000; e. return on common equity =12,5%. f. return on total assets =6%. Use this information in order to calculate the values for the following items: a. Earnings available for common stockholders; b. Total assets; c. Sales; d. Operating profit margin