Crane Corporation makes four products in a single facility. Data concerning these products appear below: Products A B C D Selling price per unit $35.30 $30.20 $20.80 $26.00 Variable manufacturing cost per unit $16.50 $15.80 $7.90 $8.50 Variable selling cost per unit $3.80 $1.60 $1.90 $3.30 Milling machine minutes per unit 3.30 1.70 2.10 2.50 Monthly demand in units 4,000 1,000 3,000 1,000 The milling machines are potentially the constraint in the production facility. A total of 22,600 minutes are available per month on these machines. Which product makes the MOST profitable use of the milling machines?