The total contribution margin for the month under variable costing approach is:

A.) $162,600

B.) $378,000

C.) $226,800

D.) $319,200

Any guided help would be MUCH appreciated. Thanks! (:

Selling price $126 Units in beginning inventory 0 Unit produced 8,700 Units sold 8,400 Units in ending inventory 300 Variable costs per units: Direct materials $30 Direct labor $48 Variable manufacturing overhead $3 Variable selling and administrative $7 Fixed costs: Fixed manufacturing overhead $156,600 Fixed selling and administrative $151,200 The total contribution margin for the month under the variable costing approach is: $162,600 $378,000 $225,800 $319,200