Cranston Corporation makes four products in a single facility. Data concerning these products appear below: Products A B C D Selling price per unit $ 42.30 $ 50.00 $ 37.60 $ 33.50 Variable manufacturing cost per unit $ 20.80 $ 30.70 $ 21.00 $ 19.90 Variable selling cost per unit $ 2.70 $ 2.10 $ 1.00 $ 2.40 Milling machine minutes per unit 3.30 4.10 2.60 1.30 Monthly demand in units 1,000 4,000 3,000 3,000 The milling machines are potentially the constraint in the production facility. A total of 28,200 minutes are available per month on these machines. Which product makes the LEAST profitable use of the milling machines