Determine the amount of manufacturing overhead given the following information: Depreciation on a factory building Telephone expense in factory office Telephone expense in sales showroom Factory foreman's salary Maintenance costs for the factory Maintenance costs for the sales showroom $ 6,650 $ 980 $ 1,050 $ 4,900 $ 1,400 $ 699 Multiple Choice $11,130 $13,220 $15,670 $13,930 A company with monthly revenue of $130,000, variable costs of $52,500, and fixed costs of $41,000 has a contribution margin of Multiple Choice $89000 $38,750 $130.000 577.500