The Hastings Company is a nation-wide wholesaler for small electronic devices. One of its most popular items is a new GPS unit called the WAMI-1000. The company operates 365 days (52 weeks) in a year. Hastings has gathered the following information: Average demand =1000 units/year Standard deviation of weekly demand =200 units Average lead time =5 weeks Standard deviation of lead time =1 week Z (service level) =1.04 What is the optimal amount of reorder point for the company? Select one: a. 1157.27 b. 1139.27 c. 6157.27 d. 6139.27