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How can you schedule regular maintenance updates for your single-region Cloud SQL instance in Google Cloud without causing downtime, given that your application must remain available daily from 6 AM to 10 PM for users in the same time zone?
A
Configure a maintenance window during a period when no users will be on the system. Control the order of update by setting non-production instances to earlier and production instances to later.
B
Create your database with one primary node and one read replica in the region.
C
Enable maintenance notifications for users, and reschedule maintenance activities to a specific time after notifications have been sent.
D
Configure your Cloud SQL instance with high availability enabled.
