Your firm is an international company that manufactures components for the oil services industry. One of these components is manufactured at plants in Singapore, Taiwan, and two plants in China. The components are then shipped to five warehouses in different parts of the US. Your data set contains demands at each warehouse, supplies at each plant, and shipping costs from each plant to each warehouse. To find the best routing of containers from plants to warehouses, which one of the the following types of linear programs would you use?
a. Transshipment
b. Transportation
c. Make or Buy
d. Product Mix