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For the HipLocal case study, the company aims to minimize service latency for global users. They've already implemented read replicas in user locations and configured their service to direct read traffic to these replicas. What additional step should they take to further reduce latency for all database interactions with minimal effort?
A
Migrate the database to Bigtable and use it to serve all global user traffic.
B
Migrate the database to Cloud Spanner and use it to serve all global user traffic.
C
Migrate the database to Firestore in Datastore mode and use it to serve all global user traffic.
D
Migrate the services to Google Kubernetes Engine and use a load balancer service to better scale the application.