Cornish Company had the following results of operations for the past year Sales (20,000 units at $22) Direct materials and direct labor $440,000 $200,000 Overhead (40% variable) 100,000 Selling and administrative expenses (all fixed) 92,000 (392,000) Operating income $48,000 A foreign company (whose sales will not affect Cornish's market) offers to buy 3,000 units at $1700 per unit. In addition to variable manufacturing costs, selling these units would incrase fixed overhead by $500 and selling and administrative costs by $1,000 If Cornish accepts the offer, its profits will: O Increase by $15,000 O increase by $13,500. O Increase by $4,500 O Decrease by $4,500 O Decrease by $300