National Manufacturing Incorporated operates two divisions and expects a minimum return of 9% should be earned from all investments. The following selected information is for the month of May Northeast Division Southwest Division Sales: $ 120,000 $ 80,000 Operating income $ 36,000 $ 40,000 Operating assets $ 300,000 $ 800,000 Northeast Division's residual income for May is: Multiple Choice $3,240 O C $9,000 $25.200 $27,000 A cost is sunk if it: Multiple Choice has been incurred and cannot be eliminated. is relevant in decision-making. O is a differential cost All of these answers are correct. F2 80 882 Save 82 < Prev 21 of 5 F5 F6