Presented below is selected information for three regional divisions of Medina Company. Divisions North West South Contribution margin $300,900 $500,300 $400,800 Controllable margin $139,500 $360,000 $211,500 Average operating assets $930,000 $2,000,000 $1,410,000 Minimum rate of return 13 % 14 % 10 % (a) Compute the return on investment for each division. North Division West Division South Division eTextbook and Media Save for Later % % % Attempts: 0 of 5 used Submit Answe