Note: Amounts are rounded. ROA = EBl/Average assets. ROA is also equal to the product of Profit margin and Asset turnover computed using the unrounded values for those amounts. Sources: Computed from amounts in Form 10-Ks of the Kroger Co., Publix Super Markets, and Weis Markets, Inc. for the years shown. Required: 1. Which company has shown the strongest sales growth over the past three years? 2. Which company was the most profitable in its most recent fiscal year? What was the source of that superior profitability-a profit margin advantage or better tu