Edde Corporation has provided the following production and total cost data for two levels of monthly production volume. The company produces a single product. Production volume of 4,000 units: Direct materials = $291,200; Direct labor = $219,600; Manufacturing overhead = $320,400. Production volume of 5,000 units: Direct materials = $364,000; Direct labor = $274,500; Manufacturing overhead = $343,000. The best estimate of the total variable manufacturing cost per unit is: $127.70 $150.30 $22.60 $72.80 must show work