About the two generic competitive advantages, cost and differentiation:I) The purchasing criteria for the cost strategy can be prioritized as delivery >> lead time >> quality>> cost.II) The purchasing criteria for the differentiation can be prioritized as unit cost >> delivery >> lead time >> quality.III) The bargaining basis for the cost and differentiation strategies are economies of scale and economies of scope respectively.IV) The supplier size for the cost strategy often has smaller capacities than that for the differentiation strategy.Only Statement IV is incorrect.All statements are incorrect.All statements are correct.Only III is correct.