Rues and West Inc. is an automobile manufacturing firm. It produces and assembles all the parts of automobiles in its factory and, later, ships the finished products to its storehouses. The managers at the storehouses distribute the goods to wholesalers. Customers then buy the products from the wholesalers. In this scenario, the push–pull boundary for Rues and West Inc. is at the _____.
a. factory
b. wholesalers
c. storehouses
d. assembly section