Oliver Inc. currently has a contribution margin of $30 on its only product. Oliver Inc. is considering spending $8,700 more on advertising this year to generate an increase in sales of 5,500 units. How will this change affect its operating income? A. It will increase operating income by $165,000. B. It will decrease operating income by $8,700. O C. It will increase operating income by $156,300. OD. It will increase operating income by $173,700