Indirect materials used
A)Product cost
B)Period cost

Indirect Materials

Materials used in the production process that cannot be directly traced to a finished product, such as lubricants and adhesives for machinery.

Product Cost

The total expense incurred to produce and deliver a product or service, including materials, labor, and overhead costs.

Period Cost

Costs incurred that do not directly relate to the production of goods, such as sales and administrative expenses.