The periodic and the perpetual inventory systems are two methods that companies use to account for inventories. Required (parts a, b & c): a) What is the main consideration when a company is choosing between a periodic and a perpetual inventory system. b) Briefly describe the major features of each system (for example: what accounts in the accounting system are affected for each and when they are affected, what is required for each system, etc.) c) Why is a physical inventory count necessary under both systems