Bethel, Inc. has collected the following data. (There are no beginning inventories.) Units produced 600 units Sales price $120 per unit Direct materials $10 per unit Direct labor $10 per unit Variable manufacturing overhead 57 per unit Fixed manufacturing overhead 516,400 per year Variable selling and administrative costs $7 per unit Fixed selling and administrative costs $1,700 per year What is the operating income using variable costing if 500 units are sold? $14,900 548,300 511,100 543,000