An analyst gathered the following information about a common stock:（）

单项选择题Which of the following steps is NOT used in the full valuation approach in measuring interest rate risk（）

A. Estimate hypothetical changes in required yields.
B. Calculate the bond’s convexity.
C. Recompute bond prices using the new required yields.

单项选择题An analyst has calculated the following ratios for a firm: Sales Total Assets: 2.8 Net Profit Margin (%): 4 Return on Total Assets (%): 11.2 Total Asset Equity: 1.6 The return on equity for this firm would be closest to:（）

A. 4.48%.
B. 6.40%.
C. 17.92%.