A supplier sells a popular auto part to car dealers. The weekly demand is approximately normal with the historical distribution of D~N$(63,25)$ units over a $45-$week operating year. The supplier pays $$26$ for each unit and sells each for $$41.$ In addition, they estimate that the annual holding cost is $30$ percent of the unit's cost $($to the supplier$).$ It costs approximately $$25$ to place an order $($managerial and clerical costs$).$ Assume a four$-$week lead time.Suppose the order costs are expected to increase and the supplier now wishes to order $270$ units at a time $($instead of the EOQ derived in question $11).$ What is the unit ratio, $\backslash$gamma $?$

a$.$

$3$

b$.$

$4$

c$.$

$2$

d$.$

$1$