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Question 4 (10 Marks) A. The production department of a National Detergents where detergents are produced, furnishes the following information for the month of January. Material used Direct wages Labor hours worked Hours of machine operation Overhead cost OMR 13,500 OMR 11,250 9,000 7,500 9,000 3 May 21, 2020 [BAAC2101/COST ACCOUNTING-1 For a job order executed by department during the period, the relevant information further provided is: Material used OMR 1,500 OMR 800 Direct wages 800 Labor hours worked Hours of machine operation 600 If you are the production head of the factory, how would you charge overhead to the job on order by using the following methods: i. Percentage of direct materials cost ii. Percentage of labor hour cost iii. Direct labor hour rate iv. Machine hour rate B. In the above problem, there are three elements of cost given, being the production head, classify and explain these three elements of cost based on controllability to the staff of production department