A company implements an Amazon EC2 Auto Scaling policy along with an Application Load Balancer to automatically recover unhealthy applications that run onAmazon...

A company implements an Amazon EC2 Auto Scaling policy along with an Application Load Balancer to automatically recover unhealthy applications that run onAmazon EC2 instances.
Which pillar of the AWS Well-Architected Framework does this action cover?

A. Security B. Performance efficiency C. Operational excellence D. Reliability