38. Nutrition In a laboratory experiment, two separate foods are given to experimental animals. Each food contains essential ingredients, A and B, for which the animals have a minimum requirement; each food also has an ingredient C, which can be harmful to the ani- mals. The following table summarizes this information. Food 1 Food 2 Required Ingredient A 10 units/g 3 units/g 49 units Ingredient B 6 units/g 12 units/g 60 units Ingredient C 3 units/g 1 unit/g How many grams of foods 1 and 2 should be given to the animals to satisfy the requirements for A and B while minimizing the amount of ingredient C ingested