The Heartlake Corporation manufactures and sells toy gyroscopes. The following data is related to sales and production of the toy gyroscopes for last year Selling price per unit Variable manufacturing costs per unit Variable selling and administrative expenses per unit Fixed manufacturing overhead (in total) Fixed selling and administrative expenses (in total) $8.10 $1.85 $4.55 $76,000 $85,000 530,000 Units produced during the year Units sold during year Using variable costing, what is the operating income for last year? OA. $1,377,000 OB. $128,000 OC. $289,000 OD. $450,000 170,000