Factory rent of 20,000 and supervisor costs of 10,000 are to be apportioned to production cost centres (Assembly and Finishing). Using the information below state an appropriate amount in total to be apportioned to the Assembly department. Assembly 60 Number of staff Cost of machinery () Floor area occupied (m2) Finishing 40 150,000 2,000 50,000 3,000 O A. 15,000 OB. 18,000 O C. 20,000 OD. 7,500