Oregon Company has the following data about its only product: Direct materials used $500,000 Direct labor 180,000 Indirect manufacturing---fixed 100,000 Selling and administrative-fixed 150,000 Indirect manufacturing-variable 120,000 Selling and administrative-variable 60,000 Selling price(per unit) 75 Units produced and sold 20,000 Oregon Company uses the contribution approach. What is the contribution margin? $700,000 $640,000 $450,000 $550.000