Which of the following is NOT TRUE for inventory management with uncertain demand?

Group of answer choices

In theory, it is impossible to guarantee a $100\%$ service level $($i$.$e$.,$ all future demands will be satisfied with certainty$).$

Increasing the safety stock $($everything else remaining unchanged$)$ will reduce the service level.

If the standard deviation of demand distribution increases $($demand uncertainty increases, everything else remaining unchanged$),$ the safety stock required to guarantee the same service level increases.

If the mean $($average$)$ of the demand distribution increases $($everything else remaining unchanged$),$ then the reorder point under the continuous review system increases.