A company has 3 plants that each produce a certain number of shipments per month of a product. Plant 1 produces 12 shipments, Plant 2 produces 17 shipments, and Plant 3 produces 11 shipments. These shipments from the 3 plants must be distributed to 4 distribution centers, each of which needs 10 shipments per month. The document provides distance information between each plant and distribution center to determine the optimal distribution solution.