[The following information applies to the questions displayed below Martinez Company's relevant range of production is 7,900 units to 12,900 units. When It produces and sells 10,400 units, its unit costs are as follows: Direct materials Direct labor Variable manufacturing overhead Flxed maniufacturing overhead Fixed selling expense Fixed administrative expense Sales commissions Variable administratlve expense Amount Per Unit $6.60 $ 4.10 $1.50 $4.60 $3.60 $2.00 $1.00 $0.50