Which of the following statements best defines a materials requirements planning system?
◦ a demand-pull system in which each component in a production line is produced immediately as needed by the next step in the production line
◦ a push-through system that manufactures finished goods for inventory on the basis of demand forecasts
◦ a demand-pull system that manufactures finished goods for inventory on the basis of demand forecasts
◦ a push-through system in which each component in a production line is produced immediately as needed by the next step in the production line