correct answer is among"87.5% 84.1% 72.6% 75.8%"Product I's inventory is managed according to the (Q,R) model. The safety stock for Product I is 120. The lead time for replenishing Product I's inventory is 3 weeks, and the weekly demand for Product I is normally distributed with mean 150 and standard deviation 60. Calculate the cycle service level we are achieving for Product I. (Note: For the values you may need for NORMSDIST and NORMSINV functions, please see the document below.)