A dieting company offers three foods (A,B, and C) and groups its customers into two groups according to their nutritional needs. The requirements that a serving of each food provides and the number of ounces of detrimental substances in each food. Determine the combination of food types that will provide at least 100% of the dally requirements and will minimize the detrimental \begin{tabular}{ll} \hline food A & serving(s) \\ food B & serving(s) \\ food C & serving(s) \end{tabular} What is the minimum amount of the detrimental substance? oz