Answer: Option (A) is correct.
A basic difference between absorption and variable costing is that the absorption costing approaches fixed factory overhead as a product cost, while variable costing approaches the same as a period cost.
Where production of inventory outpaces sales, fixed factory overhead under absorption costing approach will remain on balance sheet as unsold inventory; therefore keeping the costs off of income statement until inventory is sold. Whereas; under variable costing, fixed factory overhead will be expended to the income statement in given period .