Dirk Inc. produces and sells model cars. It incurs the costs listed in the following table. Required: For each of the following costs, choose "Yes" to indicate the category of product cost and whether it is a period cost, variable cost, fixed cost (can choose "Yes" in more than one column if applicable). (Select 'No' in the inappropriate cells.) PRODUCT COSTS Direct Materials Direct Labor Mfg. Overhead Period Cost Variable Cost Fixed Cost CFO salary Factory utilities Factory supervisor salary Store equipment depreciation Factory equipment depreciation Advertising (monthly) Model car tires Store property taxes Factory insurance Factory worker wages Marketing manager salary Glue and screws Machine maintenance costs