The following information applies to the questions displayed below.] Martinez Companys relevant range of production is 10,700 units to 15,700 units. When it produces and sells 13,200 units, its unit costs are as follows: Amount Per Unit Direct materials $ 5.00 Direct labor $ 2.50 Variable manufacturing overhead $ 1.40 Fixed manufacturing overhead $ 3.00 Fixed selling expense $ 2.00 Fixed administrative expense $ 2.20 Sales commissions $ 1.20 Variable administrative expense $ 0.45