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1.2. Theory and restocking level. (9 POINTS). a. Differentiate and contrast between safety stock and hedge inventory. Provide a clear distinction between the two concepts (2 points) b. Define the restocking level in English using your own words. (2 points) C. You are a supplier of homemade cola for BINUS Square cafeteria. BINUS Square implements a periodic review system, where they check their inventory every 15 days. Order lead time is 3 days. Average daily demand is 5 bottles, so average demand during the order period and order lead time (18 days) is 18 x 5 = 90 bottles. The standard deviation of demand during the same 18-day period is 20 bottles. c.1. Calculate the restocking level! Assume that the desired service level is 95%. (3 points) c.2. Suppose that the standard deviation of demand during the 18-day period drops to 5 bottles during the WFH situation. Recalculate the restocking level! (2 points)