Q. Owner of Crackers, Inc. produces 2 kinds of crackers: Deluxe (D) and Classic (C). She has a limited amount of 3 ingredients used to produce se crackers available for her next production run: 4,800 ounces of sugar; 9,600 ounces of flour and 2,000 ounces of salt. A box of Deluxe crackers requires 2 ounces of sugar, 6 ounces of flour and 1 ounce of salt to produce; while a box of Classic crackers requires 3 ounces of sugar, 8 ounces of flour and 2 ounces of salt. Profits for a box of Deluxe crackers are $0.40; and for a box of Classic crackers, $0.50. For production combination of 800 boxes of Deluxe and 600 boxes of Classic which resource is slack (not fully used)?