help please

PetSmart operates 50 weeks per year and uses a continuous review inventory system. It purchases dry dog food for $12 per bag. The following information is available about these bags. Refer to the standard normal table at bottom of this page. Average demand = 85 bags/week Order cost = $30/order Annual holding cost = 25 percent of the unit cost Desired cycle-service level=95.25 percent Lead time = 4 weeks constant Standard deviation of weekly demand = 9 bags Current on-hand inventory is 300 bags, with no open orders or backorders. What should be the reorder point (ROP)? (Round your response to the nearest whole number.) 0 30 O 370 O 340 O 112 O 115