Big Ike Wheels Stocks High-Demand Cycle Rims That Have a Normally

Big Ike Wheels stocks high-demand cycle rims that have a normally distributed demand during the reorder period. The average daily demand is 75 rims. If the lead time is 4 days and the standard deviation of demand during the reorder period is 15, what is
A) the amount of safety stock needed to provide a 95 percent service level to their customers
B) the reorder point