Which of the following statements are true? Period costs are expensed in the same period in which they are incurred. Period costs are included as part of the cost of goods. The wages of assembly-line workers are period costs. Sales commissions are period costs.

Sales commissions are period costs

Explanation:

Period costs include are selling expenses which comprise of sales salaries, sales commissions, and delivery expense, and general and administrative expenses such as office salaries, and depreciation on office equipment