The Economic Order Quantity $($EOQ$)$ is a fixed$-$order quantity model where the inventory is continuously monitored and as soon as the inventory drops to level R $($or below$),$ an order for Q units is placed on the supplier. In addition to the per$-$unit costs $($C$),$ a fixed order cost $($S$)$ is charged for the order regardless of the size of the order. The order arrives after a lead time L$.$

The decision in the EOQ is $"$Q$"$ and is determined as a trade$-$off between two costs. Choose the two relevant costs from the following list:

Group of answer choices

annual purchase cost

ordering cost

stockout cost

holding cost