Your company wishes to improve the performance of its EC2 instances. They require low latency and high throughput. They are currently deployed on T2.medium. It is imperative that you experience as little downtime as possible, but cost and performance are most important. How should you accomplish this?

A. Create AMIs from the instances, create new instances on t2.medium, and start those instances in a placement group.
B. Create AMIs from the instances, deploy the instances as i3.large, and start those instances in a placement group.
C. Stop the instances and restart them in a placement group.
D. Add an extra ENI to the instances and team them to provide greater throughput.