The answer is
(A) transparent, server, and client
A switch can be configured in any of the above VTP modes.
Transparent: VTP transparent switches forward VTP ads that
they receive out their trunk ports in VTP version 2. However, VTP transparent
switches don’t participate in VTP.
Server: In this mode, you can create, modify and delete
VLANs. You can also specify other parameters like VTP pruning and VTP version
for the entire VTP domain.
Client: This mode behaves the same as server, but you cannot
create, modify and delete VLANs on a VTP client.
