An insurance company has contracted you to help automatetheir application business continuity plan. They have the application running in eu-frankfurt-1 as the primary site and uk-london-1 as a disaster recovery site.
Normally they have a DNS A record associated with the IP address of the primary endpoint in eu- frankfurt-1.
In the event of a disaster, they use OCI DNS Zone Management to update the A record and replace it with the IP address of the end-point in uk- londond-1. How can you automate the failover process? (Choose the best answer.)