Pita Corporation's management has budgeted the following amounts for its next fiscal year: Total fixed expenses Selling price per unit Variable expenses per unit $490,000 $35 $15 If Pita Corporation spends an additional $15,000 on advertising, sales volume should increase by 2,500 units. What effect will this have bon operating income? OA. Decrease of $50,000 OB. Increase of $35,000 OC. Increase of $50,000 OD. Decrease of $35,000