A company is developing an application that the company will host on Amazon EC2 instances. The application must be available 24 hours a day, 7 days a week. The company needs a scalable, highly available cloud architecture to support the application.
Which guidelines should the company apply in its design to meet these requirements? (Choose two.)

A. Use EC2 Spot Instances
B. Use Multi-AZ deployments.
C. Use Auto Scaling groups
D. Use AWS Backup.
E. Use EC2 Reserved Instances.