Shady Inc, manufactures outdoor umbrellas. The company has the capacity to produce 100,000 units per year, but it currently produces and sells 75,000 units per year. The following information relates to current production: Sale price per unit $42 Variable costs per unit Manufacturing $23 Marketing and administrative $7 Total fixed costs: Manufacturing $75,000 Marketing and administrative $23,000 If a special sales order is accepted for 3.700 umbrellas at a price of $35 per unit, and foxed costs increase by $13,000, how would operating income be affected? (NOTE: Assume regular sales are not affected by the special order) O A. Increase by $31,500 OB. Increase by $5,500 OC. Decrease by $5,500 D. Increase by $31,400