Your organization is running a Firestore-backed Firebase app that serves the same top ten news stories on a daily basis to a large global audience. You want to optimize content delivery while decreasing cost and latency. What should you do?

A. Enable serializable isolation in the Firebase app. B. Deploy a US multi-region Firestore location. C. Build a Firestore bundle, and deploy bundles to Cloud CDN. D. Create a Firestore index on the news story date.