Which of the following items on 4 variable costing income statement will change m direct proportion to a charge in sales? Sales, contribution margin, income Sales, variable costs, contribution margin Sales, variable costs, contribution margin fixed costs and income Sales variable costs and fixed costs In variable costing when does fixed manufacturing overhead become an expense? Never In the period when the product is sold In the period when the expense is incurred In the period when other expenses are at the level A retailer purchased some trendy clothes that have gone out of the style and must be marked down to 60% of the original selling following is a sunk cost in this situation? The current selling price The original selling price The original purchase price The anticipated profit