What is the lowest level of the permission heirarchy that this role can be granted to the user and still allow them to create a Content Library?

An administrator is assigning a user the Content Library administrator role. The user will only be creating the library for a single vCenter Server.
What is the lowest level of the permission heirarchy that this role can be granted to the user and still allow them to create a Content Library?

A.
Global

B.
Datacenter Folder

C.
Virtual Center

D.
Datacenter

Explanation:
Explanation/Reference: