A SysOps Administrator Is Responsible for a Legacy, CPU-Heavy Application

Multiple Choice

A SysOps Administrator is responsible for a legacy, CPU-heavy application. The application can only be scaled vertically. Currently, the application is deployed on a single t2.large Amazon EC2 instance. The system is showing 90% CPU usage and significant performance latency after a few minutes. What change should be made to alleviate the performance problem?

A) Change the Amazon EBS volume to Provisioned IOPs.
B) Upgrade to a compute-optimized instance.
C) Add additional t2.large instances to the application.
D) Purchase Reserved Instances.