For each of the following costs incurred in a manufacturing company, indicate whether the costs are fixed or variable AND product or period costs. Costs (other than food) of running the cafeteria for factory personnel. Direct materials used Clerical staff in administrative offices [Choose] [Choose] Fixed and Product Variable and Period Fixed and Period Variable and Product [Choose] Depreciation of factory machinery [Choose] Insurance premiums on delivery vans [Choose] Factory custodian pay Sales commissions [Choose] [Choose]