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A business operated at 100 gs of capacity during its first month and incurred the following costs: Production costs [10,000 units ] : If 2,000 units remain unsold at the end of the month and sales total $300,000 for the month, the amount of manufacturing margin that would be reported on the varable costing income statement is a. $140.000 b. 5103,000 c. 5106,000 c. not reported