A startup manages its Cloud resources with Elastic Beanstalk. The environment consists of few Amazon EC2 instances, an Auto Scaling Group (ASG), and an Elastic Load Balancer. Even after the Load Balancer marked an EC2 instance as unhealthy, the ASG has not replaced it with a healthy instance. As a Developer, suggest the necessary configurations to automate the replacement of unhealthy instance.
a. The ping path field of the Load Balancer is configured incorrectly
b. Health check parameters were configured for checking the instance health alone. The instance failed because of application failure which was not configured as a parameter for health check status
c. The health check type of your instance's Auto Scaling group, must be changed from EC2 to ELB by using a configuration file (Correct)
d. Auto Scaling group doesn't automatically replace the unhealthy instances marked by the load balancer. They have to be manually replaced from AWS Console
