Rabbitt Corporation is considering whether to discontinue a division that generates a total contribution margin of $40,000 per year. Fixed manufacturing overhead allocated to this division is $60,000, of which 12,000 is unavoidable. If Rabbitt Corporation were to eliminate this division, the effect on the company's operating income would be a(n) O A. increase in total operating income of $8,000. OB. decrease in total operating income of $28,000. O C. increase in total operating income of $28,000. OD. decrease in total operating income of $8,000