• Hawaii Sugar Company produces brown sugar, white sugar, powdered sugar, and molasses from sugar cane syrup. The company purchases 4,000 tons of syrup weekly and is contracted to deliver at least 25 tons weekly of each type of sugar. The production process starts by manufacturing brown sugar and molasses from the syrup. A ton of syrup produces 0.3 ton of brown sugar and 0.1 ton of molasses. White sugar is produced by processing brown sugar. It takes 1 ton of brown sugar to produce 0.8 ton of white sugar. Powdered sugar is produced from white sugar through a special gridding process that produces 0.95 ton of powdered sugar with 1 ton of white sugar. The profits per ton for brown sugar, white sugar, powdered sugar, and molasses are $150, $200, $230, and $35, respectively. If , , , and  represent the quantity of brown sugar, white sugar, powdered sugar, and molasses to be delivered in the market respectively, which one of the following represents one of the constraints defining the feasible region of this problem?