QUESTION 3 A diet is being prepared for WTAMU dorms. The varied diet is to be made of three foods: A, B and C. Food A costs $4 per pound and contains 500 calories. Food B costs $ 2 per pound and contains 900 calories. Food C costs $ 3 per pound and contains 800 calories No more than 1.5 pounds of food C can be used per resident. No less than 1.25 pounds of food B should be used per resident. The objective is to feed the students at the least cost, but the diet must have at least 1900 calories. If we define the decision variables as A: pounds of food A, B: pounds of food B, and C pounds of food C, the objective function is to minimize In addition to non-negative constraints, the formulas of other constraints are , and (1. No need to use multiplication sign. For example, just write 10A not 10*A. For greater(less) than or equal to sign, just write it as >= (