You have two investment alternatives A and B for comparison. You should use the Return on Investment (ROI) and including a differential investment Al (for free capital in the case of investment A) assess and justify its advantageousness You have the following information: Profit Capital invested in Investment A 150.800 620.000 Investment B 165.660 660.000 a) Calculate the return on investment (ROI) in percent for A and B. Which variant would be the better one? b) What should the return on the differential investment A' be in order for the investment If A+ A' were identical to investment B, when would B be the cheaper option? (Calculations are to be included.)