Which statement is true about VirtualCenter and the License Server?

A.
The License Server may be installed on a separate machine, but VirtualCenter requires
a server-based license.

B.
The License Server must be installed during VirtualCenter installation and must
always run on the same server as VirtualCenter.

C.
VirtualCenter cannot be installed without an operational License Server online.

D.
If deploying a License Server is not desirable, VirtualCenter can be installed using a
host-based license file.

Explanation:
ESX Server 3 Installation Guide ESX Server 3.5 and VirtualCenter 2.5, page 30, 49.
Location of the License Server
VMware recommends that you follow the default installation and place your license
server on the same machine as your VirtualCenter Server. This has the advantage of
simplicity of setup, as well as guaranteeing VirtualCenter?to?license server
communications. Change this only if you have a good reason, such as an existing
FLEXnet license server.
At least one instance of a VirtualCenter license is required for VI Foundation, VI
Standard, and VI Enterprise editions. The following VirtualCenter editions are available:
VirtualCenter Foundation – This edition lets you manage up to three ESX Server hosts. If
you need to manage more than three hosts, upgrade to VirtualCenter edition.
VirtualCenter – This is an enterprise level edition that lets you manage up to the system
maximum number of hosts. For information about system maximums, see Configuration
Maximums for VMware Infrastructure 3.