In a fixed$-$quantity system $($FQS$),$ as the reorder point increases:

the safety stock increases.

the safety stock decreases.

the number of orders increases.

the number of orders decreases.

Question $4(1$ point$)$

The demand for trains between Marshdell and Deepbarrow varies throughout the year. The demand reaches its peak in summer and drops during winter. This demand for trains can be categorized as

static demand

overfull demand

unwholesome demand

dynamic demand