Presented here is selected information for three regional divisions of Medina Company. Divisions North West South Contribution margin $300,000 $500,000 $400,000 Controllable margin $140,000 $360,000 $210,000 Average operating assets $1,000,000 $2,000,000 $1,500,000 Minimum rate of return 13 % 16 % 10 % (a) Compute the return on investment for each division. North Division West Division South Division eTextbook and Media Save for Later Question Part Score (b) Compute the residual income for each division. North Division West Division $ South Division $ eTextbook and Media Save for Later Question Part Score (c) % % % Attempts: 0 of 3 used Submit Answer --/1.5 Attempts: 0 of 3 used Submit Answer Assume that each division has an investment opportunity that would provide a rate of return of 16%. (1) If ROI is used to measure performance, which division or divisions will probably make the additional investment? --/1.5 (2) If residual income is used to measure performance, which division or divisions will probably make the additional investment?