Which of the following is NOT a period cost?

A) Depreciation of factory maintenance equipment.
B) Salary of a clerk who handles customer billing.
C) Insurance on a company showroom where customers can view new products.
D) Cost of a seminar concerning tax law updates that was attended by the company's controller.

Period Cost

Expenses that are not directly tied to the production of goods, such as selling, general, and administrative expenses, which are expensed in the period incurred.

Factory Maintenance Equipment

Tools, machinery, and other equipment used for the upkeep of a manufacturing facility.

Company Showroom

is a dedicated space where a business displays its products or prototypes for customers to view, typically used for marketing and sales purposes.