What are two ways with which a small business can keep a wireless business separate and secure from a wireless guest access network? (Choose two

What are two ways with which a small business can keep a wireless business separate and secure from a wireless guest access network? (Choose two.)

A.
802.1Q VLANs

B.
AP detection

C.
multiple BSSIDs

D.
WMMQos

E.
802.11F roaming

F.
auto-channel selection