Which of the following is not a prime cost? Period costs include: Current liabilities on the balance sheet Operating costs that are shown on the income statement in the period in which they arc incurred. Current assets on the balance sheet. Operating costs that are shown on the income statement when products are sold. For which of the following businesses would the process cost system be appropriate? Which of the following is not true about why a service firm will use the job order costing system? Which of the following is not a factory- overhead allocation method