plz answer a,b and c

Flxed Time Period Model Given Information: - Annual Demand = 1000 units - \# days per year =365 - Ordering cost =$5/ order - Holding cost =$1.25/ unit / year - Lead time =5 days - Unit cost =$12.50 a) Find the Economic Time Interval (T) IN DAYS =Q :/D b) Find the Optimal Replenishment Level (M)=d(T+L). c) Explain how this inventory model works in a sentence or two using the values you calculated for a) and b) above. Be specific