A User Can Optimize Amazon EC2 Costs by Performing Which

Multiple Choice

A user can optimize Amazon EC2 costs by performing which of the following tasks? (Choose two.)

A) Implementing Auto Scaling groups to add and remove instances based on demand.
B) Creating a policy to restrict IAM users from creating new instances.
C) Setting a budget to limit spending on EC2 instances using AWS Budgets.
D) Purchasing Reserved Instances.
E) Adding EC2 instances to a second AWS Region that is geographically close to the end users.