The loss in sales of an existing product is a sunk cost when assessing the cost of a new product if: OA. The existing product is more costly to produce than the new product. OB. A competitor's product would have reduced the sales of the existing product. OC. The existing product is less costly to produce than the new product OD. A competitor's product is not expected to create a loss in sales of the existing product. OE. The loss in any sales should never be considered a sunk cost.