Lagle Corporation has provided the following information:

Cost per Unit Cost per Period Direct materials $ 5.25 Direct labor $ 3.90 Variable manufacturing overhead $ 1.40 Fixed manufacturing overhead $ 7200 Sales commissions $ 1.80 Variable administrative expense $ 0.30 Fixed selling and administrative expense $ 6600 If 4500 units are sold, the variable cost per unit sold is closest to: $12.35 $10.55 $10.85 $12.65 please give me the answer quickly