Question: In the context of fixed$-$quantity systems,$\_\_\_\_\_\_\_\_\_\_$is defined as the on$-$hand quantity $($OH$)$ plus any orders placed but which have not arrived minus any backorders $($BO$).$Group of answer choicesInventory positionThe reorder pointA stock$-$keeping unitWork$-$in$-$process inventoryIn the context of fixed$-$quantity systems,$\_\_\_\_\_\_\_\_\_\_$is defined as the on$-$hand quantity $($OH$)$ plus any orders placed but which have not arrived minus any backorders $($BO$).$Group of answer choices