Required Evaluate each of the following costs and determine whether the cost is (a) a product cost or a perlod cost, (b) variable or fixed in terms of behavior, and (c) for the product costs only, whether the cost is properly classified as direct material, direct labor, or manufacturing overhead. For each period cost select NA for column (c) Consider the following costs that were incurred during the current year 1. Tire costs incurred by Ford Motor Company Product cost Variable Direct material 2 Sales commissions paid to the sales force of Doll inc oduct cost Fxed ufacturing overhead glue consumed in the manufacture of Rooms To Go furniture 4 Hourly wages of refinery security guards employed by ExxonMobil 5 The salary of a financial vice president of Hewlett Packard 6 Advertising costs of Coca-Coia 7 Straight-ine depreciation on factory machinery of Boeing Corporation 8 Wages of assembly-line personnel of Whirpool Corporation 9 Delivery costs incurred by Ben & Jerry's for a shipment of their ice cream to a grocery store 10 Newsprint consumed in printing The New York Times 11 Plant insurance costs of Texas Instruments 12 LED costs incunred in light-bulb manufacturing of GE Lighting