$1.$ Given the following information: Expected demand during a lead time $=500$ kg Standard deviation of demand during a lead time $=40$ kg Saved eBook Demand during a lead time is distributed Normally Acceptable stockout risk during a lead time $=$ I percent Refer: z$-$values table. a$.$ What amount of safety stock is appropriate? $($Round the final answer to the nearest whole number.$)$ Safety stock kg b$.$ At what level of inventory should this item be reordered? ROP k g