Consider a retail firm with a net profit margin of 3.19%, a total asset turnover of 1.81, total assets of $45.6 million, and a book value of equity of $18.4 million. a. What is the firm's current ROE? b. If the firm increased its net profit margin to 3.88%, what would be its ROE? c. If, in addition, the firm increased its revenues by 25% (maintaining this higher profit margin and without changing its assets or liabilities), what would be its ROE? a. What is the firm's current ROE? The firm's current ROE is %. (Round to one decimal place.)