The sales, operating income, and invested assets for each division of Garner Company are as follows: Operating Invested Sales Income Assets Division E $3,000,000 $470,000 $2,500,000 Division F 3,600,000 430,000 2,400,000 Division G 6,000,000 560,000 3,000,000 a. Using the expanded expression, determine the profit margin, investment turnover, and rate of return on investment for each division. Round to one decimal place. Division E Division F Division G Profit margin 11 X % 17.9 X % 12.3 X % Investment turnover 2.1 x 1.9 X 2.4 X Rate of return on investment 22.9 X % 34.3 X % 29.7 X % b. Which division is the most profitable as per dollar invested? Division F X