Which of the following ratios are key components in measuring a company's operating efficiency? (you may select more than one answer. single click the box with the question mark to produce a check mark for a correct answer and double click the box with the question mark to empty the box for a wrong answer.) profit margin equity ratio return on total assets total asset turnover 1.2 which ratio summarizes the components applicable in 1.1? debt ratio total asset turnover profit margin return on total assets