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 B Products 6.10 5.10 4.60 $ 76.90 $ 3.00 4,800 $ 94.30 $ 2.00 4,800 $ 88.20 $ 4.10 3,800 D 4.20 $ 105.00 $ 2.40 2,800 The grinding machines are potentially the constraint in the production facility. A total of 54,400 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 19,480 82,500 60,420 () 54,400