Final answer:
The firm's ROE can be calculated using the formula ROE = ROA * (1 - Debt/Equity). Given the provided values, the firm's ROE is 2.8%, which is not one of the given options.
Step-by-step explanation:
To calculate the firm's ROE (Return on Equity), we need to use the formula:
ROE = ROA * (1 - Debt/Equity)
Given that the ROA is 14% and the debt/equity ratio is 0.8, we can substitute the values into the formula:
ROE = 0.14 * (1 - 0.8) = 0.14 * 0.2 = 0.028 = 2.8%
Therefore, the firm's ROE is 2.8%, which is not one of the options given in the question. So, the correct answer is E) none of the above.