Kroger's and Walmart's annual income statement summary are shown below. Annual Income Statements show: Inventory Sales COGS Kroger Walmart $ $ Millions Millions 4700 40000 59100 386103 55245 315493 Assume both Kroger and Walmart have an average annual holding cost percentage of 30%. Approximately how much lower (on average) is the inventory cost per unit at Kroger compared to Walmart's of a product that cost $5/unit? Assume the product's unit cost is the same for both stores. 12 cents lower 4 cents lower 10 cents lower