The following is a list of costs that were incurred in the production and saie of lawn mowers. Classify each of the costs as either a product cost or a period cost. Indicat 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. r. Property taxes on the factory building and equipment s. Salary of factory supervisor t. Salary of quality control supervisor who inspects each lawn mower before it is shipped u. Salary of vice president of marketing v. Steel used in producing the lawn mowers w. Steering wheels for lawn mowers x. Straight-line depreciation on the robotic machinery used to manufacture the lawn mowers y. Telephone charges for company controliter's office z. Tires for lawn mowers