C: Expand the cluster by adding an additional node:
* Demonstrating the ease of expanding the Nutanix cluster by adding an additional node showcases the scalability and simplicity of Nutanix's hyperconverged infrastructure. This is a critical success criterion for customers looking for a solution that can grow with their needs.
D: Use a single interface to manage and monitor the full stack:
* One of Nutanix's key advantages is the ability to manage and monitor the entire infrastructure stack from a single interface, Prism. This feature simplifies management and reduces operational overhead, which aligns with the customer's requirement for an "All in One" solution.

According to the Nutanix Bible, three File Server VMs (FSVMs) are deployed by default in a Nutanix Files deployment to ensure high availability and load balancing.