Which of the Following Statements Is True About Period Costs

Which of the following statements is true about period costs?

A) Operating expenses are not period costs.
B) Period costs are expensed when the products associated with these costs are sold.
C) Period costs are usually recorded as assets.
D) Most period costs are expensed in the period the costs are incurreD.Most period costs, such as advertising, salaries and wages, rent, and insurance, are expensed when they are incurred.