In the deployment shown in the exhibit, how is High Availability achieved across the two Data Center

Refer to the exhibit.

In the deployment shown in the exhibit, how is High Availability achieved across the two Data Centers?

A. By ensuring that the L2 VLANs are extended across to both Data Centers.
B. By managing both Data Centers using the same vCenter Server and using vMotion and DRS.

C. By using Virtualization Provisioning Service (VPS) to automate the provisioning of the network hardware and vSwitches across the two Data Centers.

D. By using Avaya Aura® Application High Availability features.

Reference: https://downloads.avaya.com/css/P8/documents/100182353