A company operating under a continuous review system has an average demand of 50 units per week for the item it produces. The standard deviation in weekly demand is 20 units. The lead-time for the item is six weeks, and it costs the company $30 to process each order. The holding cost for each unit is $10 per year. The company operates 52 weeks per year. A normal distribution table is appended to this exam.

Use the information in Scenario 9.8. What is the desired safety stock level if the company has a policy of maintaining a 90% cycle-service level?

		less than or equal to 50 units
		greater than 50 but less than or equal to 100 units
		greater than 100 but less than or equal to 150 units
		greater than 150 units