Best Denki in Clementi is using a fixed period inventory system to manage its inventory of the Philips kettle. The following information is given: Ordering cost is $120 per order, Unit price is $20, Lead-time is 2 months, Carrying/holding rate is 20%, and Standard deviation of monthly demand is 100. Assume 4 weeks per month. Service level = 95% The average demand for the kettle is given by 500 + 100*X units per month, where X is the last digit of your Student PI number. Example: If your Student PI number is W1234567, then X = 7 and the average demand is 500 + 100*7 = 1,200. Analyse this inventory system by calculating the review period and optimal replenishment level with safety stock. Comment on how the system should be managed. The store is planning to carry a newly introduced kettle from another manufacturer along with the existing Philips kettle. Which product do you think the store should hold more safety inventory? Why?