Coolbrook Company has the following information avallable for the past year: The company's hurdle rate is 6.01 percent. Required: 1. Calculate return on investment (ROI) and residual income for each division for last year: 2. Recalculate ROI and residual income for each division for each independent situation that follows: a. Operating income increases by 10 percent. b. Operating Income decreases by 11 percent. c. The company invests $251,000 in each division, an amount that generates $112,000 additional income per division. d. Coolbrook changes its hurdle rate to 4.01 percent