A Web Application Accepts Orders from Online Users and Places

Multiple Choice

A web application accepts orders from online users and places the orders into an Amazon SQS queue. Amazon EC2 instances in an EC2 Auto Scaling group read the messages from the queue, process the orders, and email order confirmations to the users. The Auto Scaling group scales up and down based on the queue depth. At the beginning of each business day, users report confirmation emails are delayed. What action will address this issue?

A) Create a scheduled scaling action to scale up in anticipation of the traffic.
B) Change the Auto Scaling group to scale up and down based on CPU utilization.
C) Change the launch configuration to launch larger EC2 instance types.
D) Modify the scaling policy to deploy more EC2 instances when scaling up.