For each of the following costs, place an X in the cost classifications (yellow cells) that most likely apply. There can be more than one X and some costs may be both variable and fixed.) Product Direct Indirect Period Variable Fixed Costs Wages of Assembly Line Workers Electricity Cost of Stores Plant/Factory Utilities Salary of Accounting Manager Shipping costs to Customer Minor amounts of glue and thread used in production Depreciation of Factory Equipment Sales Commisions Real Estate Taxes for Factory Real Estate Taxes for Corporate Headquarters Building Raw Materials Factory Janitor's Wages Utiltiles for Office Building President's Salary Advertising Expenses