ABC analysis provides a mechanism for identifying items that will have a significant impact on overall inventory cost, while also providing a mechanism for identifying different categories of items that will require different management and controls by the purchasing function. Suppose below is a full list of items procured by BGSU. Rank the items by dollar usage first and then calculate cumulative dollar usages. A items account for approximately $80\%$ of total spend, C items account for about $5\%,$ and the rest are B items. Which of the following statement is incorrect?