I just need help with c-1 and c-2 please.

Given this information: Expected demand during lead time =310 units Standard deviation of lead time demand =28 units Use Table. Determine each of the following. assuming that lead time demand is distributed normally: a. The ROP that will provide a risk of stockout of 1 percent during lead time. (Round your answer to the nearest whole number.) b. The safety stock needed to attain a 1 percent risk of stockout during lead time. (Do not round intermediate calculations. Round your answer to the nearest whole number.) c-1. Would a stockout risk of 3 percent require more or less safety stock thon a 1 percent risk? Less More c-2. Would the ROP be larger, smaller, or unaffected if the acceptable risk were 3 percent instead of 1 percent? Smaller Larger Unatfected