Selected information taken from the 20x2 annual report of Aardvark Company follows. During 20X2, the company had no nonoperating or nonrecurring items included in income and had no outstanding preferred stock. ($ in millions) Sales Interest expense Net income Total assets Dividends Total stockholders' equity Assumed tax rate Industry ROA Industry operating profit margin 20X2 $19,903 130 1,153 12,673 (153) $ 4,288 35% 7.32% 6.1% 20X1 $18,781 169 1,088 12,461 (131) $ 4,007 35% Required: a. For 20X2, calculate: ROA, ROCE, operating profit margin, and asset turnover. Round your percentage answers to one decimal place. For example, 0.1234 = 12.3%. b. Based on the industry data provided, does Aardvark appear to have a competitive advantage (briefly explain your answer)? If so, what strategy is the firm apparently following