You have deployed a web application targeting a global audience across multiple Oracle Cloud Infrastructure (OCI) regions.
You decide to use Traffic Management Geo-Location based Steering Policy to serve web requests to users from the region closets to the user. Within each region you have deployed a public load balancer with 4 servers in a backend set. During a DR test disable all web servers in one of the regions however, traffic Management does not automatically direct all users to the other region.
Which two are possible causes?

A. You did not correctly setup the Load Balancer HTTP health check policy associated with me backend set
B. One of the two working web servers In the other region did not pass Its HTTP health check
C. You did not setup a Route I able associated with load Balancer's subnet
D. You did not setup an HTTP Health Check associated with Load Balancer public IP in the disabled region.
E. Rather than using Geo-Location based Steering Policy, you should use Failover Policy Type to serve traffic.