Please help with all 3.

REORDER (ROP) QUANTITY WITH SAFETY STOCK: Problem 3. D - 13,000 units, d - 250units.od 40 units, K-5100/order, I. - 4 weeks, bu S0.65/unit. 2. For a 98% service probability, what is the Reorder Point ?? b. What is the optimal order quantity when it is time to order? c. If safety stock is reduced by 100 units, what is the new service probability? REORDER (ROP) QUANTITY WITH SAFETY STOCK: Problem 3. D - 13,000 units, d - 250units.od 40 units, K-5100/order, I. - 4 weeks, bu S0.65/unit. 2. For a 98% service probability, what is the Reorder Point ?? b. What is the optimal order quantity when it is time to order? c. If safety stock is reduced by 100 units, what is the new service probability