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.