Case study: Carrefour - Leveraging Internet of Things (IoT) via iBeacon to collect consumer data French supermarket chain Carrefour is one of the first retailers to extensively pilot iBeacon networks across its stores. Customers can use mobile phones or tablets attached to shopping carts to receive in-store routes and personalized promotions. As customers are guided around the store, the beacons collect data about their behavior and purchasing patterns, which the retailer uses to continuously improve operations and store layout. With more than 600 beacons deployed across 28 supermarkets, Carrefour has seen a 400% increase in its digital application's engagement rate and a 600% increase in app users. Based on this, answer the following: A. What are the benefits and challenges with the use of IoT? B. What should Carrefour do to sustain the successful outcomes? C. Briefly explain effective data management practices while showing how they are relevant to this case. D. Find and indicate any other organization using IoT to boost their productivity