Which one of the following is NOT an assumption of the Economic Order Quantity (EOQ) model?
a. Quantity discounts can be taken advantage of for large lot sizes.
b. The amount of an order received is exactly equal to what was ordered, without any short shipments from a supplier or scrap losses in the shop.
c. There is no uncertainty in lead-time.
d. Decisions for one item can be made independently of decisions made for other items.