What should the user do in this case?

A user is planning to scale up an application by 8 AM and scale down by 7 PM daily using Auto Scaling.

What should the user do in this case?
A . Setup the scaling policy to scale up and down based on the CloudWatch alarms
B . The user should increase the desired capacity at 8 AM and decrease it by 7 PM manually
C . The user should setup a batch process which launches the EC2 instance at a specific time
D . Setup scheduled actions to scale up or down at a specific time

Answer: D

Explanation:

Scale based on a schedule Sometimes you know exactly when you will need to increase or decrease the number of instances in your group, simply because that need arises on a predictable schedule. Scaling by schedule means that scaling actions are performed automatically as a function of time and date. For more information, see Scheduled Scaling. http://docs.aws.amazon.com/AutoScaling/latest/DeveloperGuide/schedule_time.html