A car manufacturer incurs the following costs. Classify each cost as either a product or period cost. If a product cost, classify it as direc materials, direct labor, or factory overhead. If a period cost, classify it as a selling expense or a general and administrative expense. Costs Cost Classification Salesperson travel costs Rent on factory building Steering wheels used in cars Property taxes on office building Wages to paint machine operators Factory electricity Advertising Depreciation on factory machine Salesperson commissions Depreciation on office equipment