A Data Warehouse/Date Mining solution would be appropriate for the following use case for a national retailer: Finding the best-selling item from a new web site. Understanding the impact of multiple assortment plans across fifteen geographical regions versus eight different competitors. Understanding the impact of multiple assortment plans across fifteen geographical regions versus eight different competitors. Finding the inventory level of a new item across a national chain. Finding the inventory level of a new item across a national chain. Finding the highest-performing salesperson in the company