You Have Decided That You Need to Change the Instance

Multiple Choice

You have decided that you need to change the instance type of your production instances which are running as part of an AutoScaling group. The entire architecture is deployed using CloudFormation Template. You currently have 4 instances in Production. You cannot have any interruption in service and need to ensure 2 instances are always runningduring the update. Which of the options below listed can be used for this?

A) AutoScalingRollingUpdate
B) AutoScalingScheduledAction
C) AutoScalingReplacingUpdate
D) AutoScalinglntegrationUpdate