The following is a list of costs that were incurred in the production and sale of large commercial airplanes: Classify each cost as elther a product cost or a period cost. 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. i. Depreciation on factory equipment j. Masks for use by painters in painting the airplane body k. Cost of paving the headquarters employee parking lot 1. Turbo-charged airplane engine m. Prebulit leather seats installed in the first-class cabin n. Human Resources Department costs for the year o. Hourly wages of employees that assemble the airplane p. Salary of the Marketing Department personnel q. Oil to lubricate factory equipment r. Yearly cost of the maintenance contract for robotic equipment 5. Hydraulic pumps used in the airplane's flight control system t. Cost of miniature replicas of the airplane used to promote and market the airplane u. Metal used for producing the airplane body v. Power used by painting equipment w. Annual bonus paid to the chlef operating officer of the company x. Interior trim material used throughout the airplane cabin y. Salary of plant manager z. Annual fee to a celebrity to promote the aircraft