Which two statements are true about virtual switches in ESX Server?

Which two statements are true about virtual switches in ESX Server? Select two.

A.
Virtual switches can be created with or without physical NICs.

B.
Virtual switches cannot be created without physical NICs.

C.
A VMotion port group must not be created on a virtual switch used for virtual machine traffic.

D.
A service console port group can be created on a virtual switch used for a virtual machine traffic.