$4)(1$ point$)$ Refer back to problem $1).$ In that problem, you determined the daily demand d $(1$f$))$ and the ROP $(1$g$)).$ Your current inventory control policy for that problem is to order Q$*(1$b$))$ units whenever the inventory level drops to the ROP.$$ But this assumes two things:$1)$ that the daily demand is constant $$ exactly d units every day $$ and $2)$ that the delivery lead time is exactly $3$ days $$ the truck is never late.$$ In real life, the demand will vary from day to day and the delivery will not always be on time.$$ To account for this uncertainty, assume that instead of ordering at the ROP, you choose to order one day early, at the ROP $+$ d $=$ d$*$l $+$ d $=$ d$*($l$+1),$ where l is the lead time.$$ On average, how much extra will you pay in holding costs over the course of a year by following this more cautious policy?$$

$=300+$