Consider a retail firm with a net profit margin of 3.22%, a total asset turnover of 1.84 , total assets of $43.9 million, and book value of equity of $18.3 million. a. What is the firm's current ROE? b. If the firm increased its net profit margin to 3.90%, what would be its ROE? c. If, in addition, the firm increased its revenues by 15% (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.) b. If the firm increased its net profit margin to 3.90%, what would be its ROE? The new ROE would be \%. (Round to one decimal place.) c. If, in addition, the firm increased its revenues by 15% (maintaining this higher profit margin and without changing its assets or liabilities), what would be its ROE? The new ROE would be \%. (Round to one decimal place.)