Suppose that the manager of a construction supply house determined from historical records that demand for sand averages $49$ tons. In addition, suppose the manager determined that demand during lead time could be described by a normal distribution that has a mean of $49$ and a standard deviation of $6$ tons. Answer the following questions assuming that the manager is willing to accept a stockout risk of no more than $3$ percent. Use Table B$\mathrm{.}2\backslash$table$[[$Tabie B$,$Q$\mathrm{.}2$ A$,$unde,est:,rdize,lal $d,$from,$0+z,,,P_{15}+172$ b$.$ How much safety stock should be held? $($Round your answer to two decimal points.$)$ c$.$ What reorder point should be used? $($Round your answer to two decimal points.$)$