Which of the following is true of the product cost concept? 0 5- Under the product cost concept, only the costs of manufacturing a product are included in the cost amount per unit to which the markup is added. 0 b- It is often used by contractors who sell products to government agencies. 0 (3- Under the product cost concept, the manufacturing costs and the selling and administrative expenses are included in the cost amount per unit to which the markup is added. 0 d- It is used to decide whether to sell a product at an intermediate stage or to process it further