“Carrefour S.A. (Euronext: CA) is a French multinational retailer headquartered in Boulogne Billancourt, France, in the Hauts-de-Seine Department near Paris. Carrefour is one of the largest hypermarket chains in the world (with close to 1,600 hypermarkets at the end of 2015), the fourth largest retail group in the world in terms of revenue (after Wal-Mart, Tesco and Costco), and the second in profit (after Wal-Mart). Carrefour operates in more than 30 countries, in Europe, the Americas, Asia and Africa. Recently, the management of Carrefour reviewed its situation under conditions of stagnant growth and increasing competition from international rivals like Wal-Mart, Tesco, etc. A team of consultants has been hired to evaluate the retail giant’s performance. As one of case team members, what metrics would you use to evaluate Carrefour’s performance?”