Consider the following information for a given certain company:

Average Demand $=52,000$ units$/$year

Ordering costs $=$$$\frac{45}{?}$ order

Standard deviation of weekly demand $=110$ units

Holding costs $=$

$$0\mathrm{.}50/$unit$/$year

Lead time $=2$ weeks

Cycle$-$service level $=90\%$

Number of weeks per year $=52$ weeks

At the most recent review an inventory clerk just checked the inventory of this item and found $2700$ units. There were no scheduled receipts and no back orders. The amount of safety stock is

Between $190-200$

Between $210-220$

Between $230-240$

Between $250-260$

None of the above