B. Postponement. In this situation, the manufacturer should use postponement to eliminate inventory imbalances of customized products. Postponement is a supply chain strategy that involves delaying certain activities, such as customization, until customer demand is known. By postponing the customization process until after receiving specific customer orders, the manufacturer can better match production with actual demand, reducing the risk of inventory imbalances. This approach can help minimize excess inventory, lower carrying costs, and reduce the likelihood of obsolete products, ultimately improving supply chain efficiency and responsiveness.