The incubation period averages 8-12 hours, after which diarrhea and abdominal cramps begin. C. perfringens symptoms usually persist for one day. A severe complication, necrotic enteritis (also known as pig-bel syndrome), can develop if large numbers of bacteria are ingested.
Variable costing is a costing system under which those costs of production that vary with output are treated as product costs. This would usually include direct materials, direct labor and variable portion of manufacturing overhead. Fixed manufacturing cost is not treated as a product costs under variable costing.
Absorption costing is a method whereby you apply part of your fixed overhead costs to the cost of manufacturing products. You do this on a per-unit basis. Simply divide your fixed costs by the number of units you manufactured and sold during the period. The result is a cost per unit for each unit you made and sold.