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How can a company ensure high availability and automatic failover for a critical application's database hosted on Amazon EC2?
A
Deploy two EC2 instances in separate Availability Zones within the same Region, with the database installed and database replication configured.
B
Deploy a single EC2 instance in an Availability Zone, install the database, back up data using an AMI, and leverage AWS CloudFormation for EC2 instance provisioning in case of disruptions.
C
Deploy two EC2 instances across different AWS Regions, install the database on each, establish database replication, and implement a failover mechanism to switch to the secondary Region.
D
Deploy a single EC2 instance in an Availability Zone, install the database, back up data using an AMI, and enable EC2 automatic recovery for instance restoration in the event of a disruptive event.
