What is not a requirement for a VxRail External vCenter deployment?

What is not a requirement for a VxRail External vCenter deployment?
A . FQDN of the Embedded PSC
B . FQDN of the vCenter Server
C . An existing datacenter name to be used for the VxRail cluster
D . Verification that the DNS server can resolve all VxRail ESXi hostnames

Answer: C

Explanation:

Reference: https://www.dellemc.com/et-ee/collaterals/unauth/technical-guides-support-information/products/

converged-infrastructure/h15844-vxrail-4-0-vcenter-server-pg.pdf