$8.$ A company wants to determine its reorder point $($R$).$ Demand is variable and they want to build a safety stock into R$.$ If the average daily demand is $12,$ the lead time is $5$ days, the desired $"$z$"$ value is $1\mathrm{.}96,$ and the standard deviation of usage during lead time is $3,$ which of the following is the desired value of Reorder$-$point?