A Company Is Running a Website on Amazon EC2 Instances

Multiple Choice

A company is running a website on Amazon EC2 instances that are in an Auto Scaling group. When the website traffic increases, additional instances take several minutes to become available because of a long-running user data script that installs software. A SysOps administrator must decrease the time that is required for new instances to become available. Which action should the SysOps administrator take to meet this requirement?

A) Reduce the scaling thresholds so that instances are added before traffic increases.
B) Purchase Reserved Instances to cover 100% of the maximum capacity of the Auto Scaling group.
C) Update the Auto Scaling group to launch instances that have a storage optimized instance type.
D) Use EC2 Image Builder to prepare an Amazon Machine Image (AMI) that has pre-installed software.