The demand data that follows was collected for a product using periods of $1$ week in length. The lead time for this product is $12$ days. The desired service level is $90\%.$ Calculate the safety stock level $($SS$)$ and the reorder point $($ROP$).$ Use the MAD to calculate safety stock.

Demand

$--------$

$103$

$162$

$133$

$97$

$122$

$157$

Question $6$ options:

SS $=26\mathrm{.}5$ ROP $=247\mathrm{.}7$

SS $=34\mathrm{.}7$ ROP $=163\mathrm{.}7$

SS $=34\mathrm{.}7$ ROP $=255\mathrm{.}9$

SS $=45\mathrm{.}4$ ROP $=266\mathrm{.}6$

SS $=59\mathrm{.}5$ ROP $=280\mathrm{.}6$