A recent organizational audit uncovered an existing Amazon RDS database that is not currently configured for high availability. Given the critical nature of this database, it must be configured for high availability as soon as possible.
How can this requirement be met?

A. Switch to an active/passive database pair using the create-db-instance-read-replicawith the – -availability-zoneflag.
B. Specify high availability when creating a new RDS instance, and live-migrate the data.
C. Modify the RDS instance using the console to include the Multi-AZ option.
D. Use the modify-db-instancecommand with the – -ha flag.