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Spring, Inc. manufactures two products. It currently has 1,400 hours of direct labor and 9,100 hours of machine time available per month. The table below lists the contribution margin, labor and machine time requirements, and demand for each product. Unit contribution margin Demand Labor time Machine time Product A Product B $ 23.00 $21.00 2,800 units 1,400 units 1/4 hour 1/2 hour 3 hour 1/2 hour How much of each product should Spring manufacture per month? Multiple Choice 2.800 units of A and 1.000 units of B 2,800 units of A and O units of B O units of A and 9,100 units of 8 2,800 units of A and 600 units of B