Invariable costs:

<p><em><strong>A. Include only the prime costs of manufacturing a product. </strong></em></p> <p><em><strong>B. Include only the conversion costs of manufacturing a product. </strong></em></p> <p><em><strong>C. Are expensed when products become part of finished goods inventory. </strong></em></p> <p><em><strong>D. Are regarded as assets before the products are sold.</strong></em></p>