Which of the following is correct concerning variable vs absorption costing? The difference in operating income between the two approaches is captured A) by the difference between fixed manufacturing costs in ending inventory minus fixed manufacturing costs in opening inventory. B) Absorption costing income statements need to differentiate between variable and fixed costs. OC) The absorption costing income statement combines costs by cost behaviour. D) Absorption costing income statement classifies fixed costs as period costs. Variable costing regards fixed manufacturing overhead as a period expense. an inventoriable cost. an unexpired cost. a deferred asset. a product cost.