A laboratory technician wants to purchase two different feeds, A and B, for its animals. The following table summarizes the nutritional contents of the feeds, the required amounts of each ingredient, and the cost of each type of feed. Feed A Feed B Required Carbohydrates 1 Unit/b 4 Units/b 40 Units Protein 2 Units/lb 1 Unit/ BO Units Cost 16e/ib 18e/b How many pounds of each type of feed should the laboratory technician buy to satisfy its needs at minimum cost (in %)? Ib Feed A Feed a minimum cost ib $