What can be used to provide a central shared repository in a DMZ?

For security reasons the VMware vSphere Update Manager (VUM) has no Internet access.

What can be used to provide a central shared repository in a DMZ?
A . VMware vSphere Update Manager Download Service
B . vSphere Authentication Proxy
C . VMware content library
D . vCenter Server Appliance

Answer: A

Explanation:

Reference: https://kb.vmware.com/s/article/1004455