The Hoops Corporation manufactures and sells hula hoops. The following data is related to sales and production of the hula hoops for last year. Selling price per unit $8.20 Variable manufacturing costs per unit $1.84 Variable selling and administrative expenses per unit $4.95 Fixed manufacturing overhead (in total) $80,000 Fixed selling and administrative expenses (in total) $83,000 Units produced during the year 520,000 Units sold during year 160,000 Using variable costing, what is the contribution margin for last year? OA. $294,400 OB. $1,017,600 OC. $1,312,000 OD. $225,600