The total prime cost of a product was OMR6,000. The variable manufacturing overhead is calculated based on the number of direct labor hours. The variable manufacturing overhead cost per hour is twice the direct labor cost per hour. The fixed manufacturing overhead was OMR5,000. Assuming that direct labor hours were 650 and that the ?direct labor cost was 20% of direct materials cost how much is the total manufacturing cost OR a. OMR8,000 b. OMR23,000 C. OMR18,000 O d. OMR13.000 e. OMR11,000