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Question 4 Erika Sdn Bhd (ESB) produces small electric engines. Identify the following costs as direct materials (DM), direct labor (DL), manufacturing overhead (MOH), or a period cost (PC). Also indicate whether the cost is variable (V) or fixed (F) with respect to behavior. 1) Commissions paid to salespeople. 2) Straight-line depreciation on the factory building. 3) Salary of the plant supervisor. 4) Wages of the assembly-line workers. 5) Machine lubricant used in production activities. 6) Engine casings used in production activities. 7) Advertising placed in trade journals. 8) Lease payments for the president's automobile. 9) Property taxes paid on the factory facilities