The three elements of product (manufacturing) costs are

a. direct materials, work in process, and overhead.

b. direct materials, work in process, and finished goods.

c. direct materials, direct labor, and overhead.

d. direct materials, direct labor, and period costs.

Which of the following costs is considered overhead?

a. Indirect labor costs only

b. Direct materials costs only

c. Both indirect materials and indirect labor costs

d. Direct materials and direct labor costs