B. Calculate the profit margin, return on investment, and residual income. Assume an investment base of $100,000 and 6% cost of capital. Round your percentage answers to one decimal place. Profit margin Return on investment Residual income C. Which of the following statements is correct? Uncontrollable costs are included in the income statement because a. these costs ultimately affect each division. b. these costs are the responsibility of each division manager. c. these costs are non-recurring. d. these costs are head office's responsibility