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 $8.30 Variable manufacturing costs per unit $1.86 Variable selling and administrative expenses per unit $4.95 Fixed manufacturing overhead (in total) $79,000 Fixed selling and administrative expenses (in total) 584,000 Units produced during the year 520,000 Units sold during year 190,000 Using variable costing, what is the contribution margin for last year? O A $1,223,600 OB $1,577,000 OC. $353,400 OD. $283,100