You have a large multi-tier architecture creating using cloudformation, that serves public facing web traffic through a load balancer and is backed by a web tier that is contained within an Amazon EC2 Auto Scaling group. During a peak in traffic, you discover that your web tier is adding new instances disproportionately compared to the amount of incoming traffic and the Auto Scaling policy that was set up.

Answer options:

A.Using CloudWatch and the instance BootTime metric, increase the PauseTime and CoolDown property on the Auto Scaling group to be over the value of the metric.
B.Using a custom CloudWatch metric insert the elapsed time since the instance launch to the time the instance responds to an Elastic Load Balancing health check, and periodically adjust the Pause Time and the CoolDown property on the AutoScaling group to be over the value of the metric.
C.Using a custom CloudWatch metric insert the elapsed time since the instance launch to the time the instance responds to an Elastic Load Balancing health check, and periodically adjust the Pause Time of the UpdatePolicy and reduce the Scaling Adjustment property by 50%
D.Using a third-party configuration management tool and the AWS SDK suspend all ScheduledActions of the Auto Scaling group until after the traffic peak and then resume all scheduledActions.