Vaya owns a small store in her town. She mostly makes and sells custom T-shirts for local schools and sports teams. Her store became very popular and even had customers from neighboring towns. She decided to create a website to offer online orders. Demand increased to the point where Vaya had trouble keeping up. One of her technology-savvy friends suggested that Vaya use a computerized system that will integrate production planning and inventory control. The ______ system will help Vaya determine what is needed, how much, and when. just-in-time inventory (JIT) material requirements planning (MRP) inventory control work-in-process