COST TERMS AND CONCEPTS - ANSWER BOTH QUESTIONS 1 & 2a-d Classify each of the following costs as either period costs or product costs." Also indicate whether each cost is "fixed or variable with respect to changes in the amount of output produced and sold. Variable X Period Cost Product Cost Cost Fixed Cost Example: Rent on a sales office Example: Direct materials X a. Sales commissions .. b. Rent on a factory building ..... c. Headquarters secretarial salaries d. Assembly line workers e. Product advertising f. Cherries in a cannery g. Top management salaries h. Lubricants for machines ... i. Shipping costs via express service j. Executive training program. k. Factory supervisory salaries