Use the following to answer next 2 questions: Cranston Company 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 Variable manufacturing cost per unit $20.80 $30.70 $37.60 $33.50 $21.00 $19.90 Variable selling cost per unit $2.70 $2.10 $1.00 $2.40 Milling machine minutes per unit. Monthly demand in units 3.30 4.10 1,000 4,000 3,000 2.60 1.30 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.