Time left 0:26:05 Under which costing system non-manufacturing costs may be included in calculating product costs? O a. Variable costing system only. O b. Activity based costing system only. Oc. Absorption costing system only. O d. None of the given answers O e. Absorption and Variable costing systems. Which one of the following is not correct about job-order costing systems and process costing systems? O a. In process costing systems cost accumulation is done on a department basis. O b. Job order costing systems normally used when there are varieties of products to produced. OC. None of the given answers O d. Job order costing systems and process costing systems use similar manufacturing accounts. e. Job order costing systems and process costing systems have different flow of costs through manufacturing accounts