8. Cindy. Inc. sells a product for $10 per unit. The variable expenses are $6 per unit, and the fixed expenses total $35,000 per period. By how much will net operating income change if sales are expected to increase by $40,000? A $16,000 increase B. $5,000 increase C. $24,000 increase D. $11,000 decrease 9. Pool Company's variable expenses are 36% of sales. Pool is contemplating an advertising campaign that will cost $20,000. If sales increase by $80,000, the company's net operating income should increase by: A $28,800 B. $64,000 C. $8,800 D. $31,200