Clariton Corporation has two divisions, Kissimmee and Grant, and evaluates management on the basis of return on investment. Kissimmee currently makes a part that it sells to both Grant and outsiders. Selected data follow. Selling price to Grant $ 25 Variable cost 18 Fixed costs 80,000 Kissimmee is seeking an increase in its selling price to $28 per unit because of rising costs. Grant can obtain comparable units from an outside supplier for $26; however, if Grant uses the supplier, Kissimmee will have idle capacity because of an inability to increase sales to outsiders. From the perspective of Clariton Corporation: Multiple Choice A. Kissimmee should continue to do business with Grant and charge $28 per unit. B. Kissimmee should continue to do business with Grant and charge $25 per unit. C. Kissimmee should continue to do business with Grant because Kissimmee's variable cost per unit is only $18. D. Grant should do business with the outside supplier. E. Grant should split its business between Kissimmee and the outside supplier