Bruce Corporation makes four products in a single facility. These products have the following unit product costs: Direct materials Direct labor Variable manufacturing overhead Fixed manufacturing overhead Unit product cost Products A B C D $14.60 $10.50 $11.30 $10.90 19.70 27.70 33.90 40.70 4.60 3.00 2.90 3.50 26.80 35.10 26.90 37.50 $65.70 $76.30 $75.00 $92.60 Additional data concerning these products are listed below. Grinding minutes per unit Selling price per unit Variable selling cost per unit Monthly demand in units Products A B C D 4.10 5.60 4.60 3.70 $76.40 $93.80 $87.70 $104.50 $ 2.50 $ 1.50 $ 3.60 $ 1.90 4,300 4,300 3,300 2,300 The grinding machines are potentially the constraint in the production facility. A total of 53,900 minutes are available per month on these machines. Direct labor is a variable cost in this company. How many minutes of grinding machine time would be required to satisfy demand for all four products? Multiple Choice 65,400 53.900 5,280 47.770