What is an accurate description about Dell EMC VxBlock system?

CI solution that combines compute, virtualization, network, software defined storage into an engineered solution.

HCI solution that combines compute, virtualization, network, software-defined storage into an engineered solution.

CI solution that combines compute, virtualization, network, storage into an engineered solution.

HCI solution that combines compute, virtualization, network, and storage optimized for VMware VSAN