The following is a list of costs incurred by several businesses: Classify each of the following costs as product costs or period costs. Indicate whether each product cost is a direct materials cost, a direct labor cost, or a factory overhead cost. Indicate whether each period cost is a selling expense or an administrative expense.

d. Depreciation of factory equipment e. Hourly wages of warehouse laborers f. Wages of company controller's secretary g. Maintenance and repair costs for factory equipment h. Paper used by commercial printer