For each item shown below, classify it as a product cost or a period cost, by placing an X in the column. For each item that is a product cost, also indicate whether it is a direct cot or ar indirect cost with respect to a unit of finished produ Product or period cost? Direct or indirect cost? Product Period Cost item Administrative salaries Direct labor Advertising Property tax on the factory Factory maintenance Direct materials Depreciation on factory equipment Interest expense Factory supplies Direct Indirect