You are using a single Cloud SQL instance to serve your application from a specific zone. You want to introduce high availability.
What should you do?
A . Create a read replica instance in a different region
B . Create a failover replica instance in a different region
C . Create a read replica instance in the same region, but in a different zone
D . Create a failover replica instance in the same region, but in a different zone
Answer: D
Explanation:
Reference https://cloud.google.com/sql/docs/mysql/configure-ha