Costco's and Walwart's annual income statement summary are shown below. Annual Income Statements show: Costco Walmart $ $ Millions Inventory Sales COGS Millions 5672 39547 59100 386103 55245 315493 Assume both Costco and Walmart have an average annual holding cost % of 20%. Approximately how many inventory turns are there for Costco each year? 9.7 turns 15 turns 6.7 turns 20 turns